aboutsummaryrefslogtreecommitdiff
path: root/mesalib/src/mesa/vbo/vbo_exec_array.c
diff options
context:
space:
mode:
Diffstat (limited to 'mesalib/src/mesa/vbo/vbo_exec_array.c')
-rw-r--r--mesalib/src/mesa/vbo/vbo_exec_array.c2677
1 files changed, 1341 insertions, 1336 deletions
diff --git a/mesalib/src/mesa/vbo/vbo_exec_array.c b/mesalib/src/mesa/vbo/vbo_exec_array.c
index 98d6badc4..a189ab76b 100644
--- a/mesalib/src/mesa/vbo/vbo_exec_array.c
+++ b/mesalib/src/mesa/vbo/vbo_exec_array.c
@@ -1,1336 +1,1341 @@
-/**************************************************************************
- *
- * Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas.
- * Copyright 2009 VMware, Inc.
- * All Rights Reserved.
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the
- * "Software"), to deal in the Software without restriction, including
- * without limitation the rights to use, copy, modify, merge, publish,
- * distribute, sub license, and/or sell copies of the Software, and to
- * permit persons to whom the Software is furnished to do so, subject to
- * the following conditions:
- *
- * The above copyright notice and this permission notice (including the
- * next paragraph) shall be included in all copies or substantial portions
- * of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
- * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
- * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
- * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
- * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
- * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
- * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
- *
- **************************************************************************/
-
-#include "main/glheader.h"
-#include "main/context.h"
-#include "main/state.h"
-#include "main/api_validate.h"
-#include "main/varray.h"
-#include "main/bufferobj.h"
-#include "main/enums.h"
-#include "main/macros.h"
-
-#include "vbo_context.h"
-
-
-/**
- * All vertex buffers should be in an unmapped state when we're about
- * to draw. This debug function checks that.
- */
-static void
-check_buffers_are_unmapped(const struct gl_client_array **inputs)
-{
-#ifdef DEBUG
- GLuint i;
-
- for (i = 0; i < VERT_ATTRIB_MAX; i++) {
- if (inputs[i]) {
- struct gl_buffer_object *obj = inputs[i]->BufferObj;
- assert(!_mesa_bufferobj_mapped(obj));
- (void) obj;
- }
- }
-#endif
-}
-
-
-/**
- * A debug function that may be called from other parts of Mesa as
- * needed during debugging.
- */
-void
-vbo_check_buffers_are_unmapped(struct gl_context *ctx)
-{
- struct vbo_context *vbo = vbo_context(ctx);
- struct vbo_exec_context *exec = &vbo->exec;
- /* check the current vertex arrays */
- check_buffers_are_unmapped(exec->array.inputs);
- /* check the current glBegin/glVertex/glEnd-style VBO */
- assert(!_mesa_bufferobj_mapped(exec->vtx.bufferobj));
-}
-
-
-
-/**
- * Compute min and max elements by scanning the index buffer for
- * glDraw[Range]Elements() calls.
- * If primitive restart is enabled, we need to ignore restart
- * indexes when computing min/max.
- */
-void
-vbo_get_minmax_index(struct gl_context *ctx,
- const struct _mesa_prim *prim,
- const struct _mesa_index_buffer *ib,
- GLuint *min_index, GLuint *max_index)
-{
- const GLboolean restart = ctx->Array.PrimitiveRestart;
- const GLuint restartIndex = ctx->Array.RestartIndex;
- const GLuint count = prim->count;
- const void *indices;
- GLuint i;
-
- if (_mesa_is_bufferobj(ib->obj)) {
- const GLvoid *map =
- ctx->Driver.MapBuffer(ctx, GL_ELEMENT_ARRAY_BUFFER_ARB,
- GL_READ_ONLY, ib->obj);
- indices = ADD_POINTERS(map, ib->ptr);
- } else {
- indices = ib->ptr;
- }
-
- switch (ib->type) {
- case GL_UNSIGNED_INT: {
- const GLuint *ui_indices = (const GLuint *)indices;
- GLuint max_ui = 0;
- GLuint min_ui = ~0U;
- if (restart) {
- for (i = 0; i < count; i++) {
- if (ui_indices[i] != restartIndex) {
- if (ui_indices[i] > max_ui) max_ui = ui_indices[i];
- if (ui_indices[i] < min_ui) min_ui = ui_indices[i];
- }
- }
- }
- else {
- for (i = 0; i < count; i++) {
- if (ui_indices[i] > max_ui) max_ui = ui_indices[i];
- if (ui_indices[i] < min_ui) min_ui = ui_indices[i];
- }
- }
- *min_index = min_ui;
- *max_index = max_ui;
- break;
- }
- case GL_UNSIGNED_SHORT: {
- const GLushort *us_indices = (const GLushort *)indices;
- GLuint max_us = 0;
- GLuint min_us = ~0U;
- if (restart) {
- for (i = 0; i < count; i++) {
- if (us_indices[i] != restartIndex) {
- if (us_indices[i] > max_us) max_us = us_indices[i];
- if (us_indices[i] < min_us) min_us = us_indices[i];
- }
- }
- }
- else {
- for (i = 0; i < count; i++) {
- if (us_indices[i] > max_us) max_us = us_indices[i];
- if (us_indices[i] < min_us) min_us = us_indices[i];
- }
- }
- *min_index = min_us;
- *max_index = max_us;
- break;
- }
- case GL_UNSIGNED_BYTE: {
- const GLubyte *ub_indices = (const GLubyte *)indices;
- GLuint max_ub = 0;
- GLuint min_ub = ~0U;
- if (restart) {
- for (i = 0; i < count; i++) {
- if (ub_indices[i] != restartIndex) {
- if (ub_indices[i] > max_ub) max_ub = ub_indices[i];
- if (ub_indices[i] < min_ub) min_ub = ub_indices[i];
- }
- }
- }
- else {
- for (i = 0; i < count; i++) {
- if (ub_indices[i] > max_ub) max_ub = ub_indices[i];
- if (ub_indices[i] < min_ub) min_ub = ub_indices[i];
- }
- }
- *min_index = min_ub;
- *max_index = max_ub;
- break;
- }
- default:
- assert(0);
- break;
- }
-
- if (_mesa_is_bufferobj(ib->obj)) {
- ctx->Driver.UnmapBuffer(ctx, GL_ELEMENT_ARRAY_BUFFER_ARB, ib->obj);
- }
-}
-
-
-/**
- * Check that element 'j' of the array has reasonable data.
- * Map VBO if needed.
- * For debugging purposes; not normally used.
- */
-static void
-check_array_data(struct gl_context *ctx, struct gl_client_array *array,
- GLuint attrib, GLuint j)
-{
- if (array->Enabled) {
- const void *data = array->Ptr;
- if (_mesa_is_bufferobj(array->BufferObj)) {
- if (!array->BufferObj->Pointer) {
- /* need to map now */
- array->BufferObj->Pointer =
- ctx->Driver.MapBuffer(ctx, GL_ARRAY_BUFFER_ARB,
- GL_READ_ONLY, array->BufferObj);
- }
- data = ADD_POINTERS(data, array->BufferObj->Pointer);
- }
- switch (array->Type) {
- case GL_FLOAT:
- {
- GLfloat *f = (GLfloat *) ((GLubyte *) data + array->StrideB * j);
- GLint k;
- for (k = 0; k < array->Size; k++) {
- if (IS_INF_OR_NAN(f[k]) ||
- f[k] >= 1.0e20 || f[k] <= -1.0e10) {
- printf("Bad array data:\n");
- printf(" Element[%u].%u = %f\n", j, k, f[k]);
- printf(" Array %u at %p\n", attrib, (void* ) array);
- printf(" Type 0x%x, Size %d, Stride %d\n",
- array->Type, array->Size, array->Stride);
- printf(" Address/offset %p in Buffer Object %u\n",
- array->Ptr, array->BufferObj->Name);
- f[k] = 1.0; /* XXX replace the bad value! */
- }
- /*assert(!IS_INF_OR_NAN(f[k]));*/
- }
- }
- break;
- default:
- ;
- }
- }
-}
-
-
-/**
- * Unmap the buffer object referenced by given array, if mapped.
- */
-static void
-unmap_array_buffer(struct gl_context *ctx, struct gl_client_array *array)
-{
- if (array->Enabled &&
- _mesa_is_bufferobj(array->BufferObj) &&
- _mesa_bufferobj_mapped(array->BufferObj)) {
- ctx->Driver.UnmapBuffer(ctx, GL_ARRAY_BUFFER_ARB, array->BufferObj);
- }
-}
-
-
-/**
- * Examine the array's data for NaNs, etc.
- * For debug purposes; not normally used.
- */
-static void
-check_draw_elements_data(struct gl_context *ctx, GLsizei count, GLenum elemType,
- const void *elements, GLint basevertex)
-{
- struct gl_array_object *arrayObj = ctx->Array.ArrayObj;
- const void *elemMap;
- GLint i, k;
-
- if (_mesa_is_bufferobj(ctx->Array.ElementArrayBufferObj)) {
- elemMap = ctx->Driver.MapBuffer(ctx,
- GL_ELEMENT_ARRAY_BUFFER_ARB,
- GL_READ_ONLY,
- ctx->Array.ElementArrayBufferObj);
- elements = ADD_POINTERS(elements, elemMap);
- }
-
- for (i = 0; i < count; i++) {
- GLuint j;
-
- /* j = element[i] */
- switch (elemType) {
- case GL_UNSIGNED_BYTE:
- j = ((const GLubyte *) elements)[i];
- break;
- case GL_UNSIGNED_SHORT:
- j = ((const GLushort *) elements)[i];
- break;
- case GL_UNSIGNED_INT:
- j = ((const GLuint *) elements)[i];
- break;
- default:
- assert(0);
- }
-
- /* check element j of each enabled array */
- check_array_data(ctx, &arrayObj->Vertex, VERT_ATTRIB_POS, j);
- check_array_data(ctx, &arrayObj->Normal, VERT_ATTRIB_NORMAL, j);
- check_array_data(ctx, &arrayObj->Color, VERT_ATTRIB_COLOR0, j);
- check_array_data(ctx, &arrayObj->SecondaryColor, VERT_ATTRIB_COLOR1, j);
- for (k = 0; k < Elements(arrayObj->TexCoord); k++) {
- check_array_data(ctx, &arrayObj->TexCoord[k], VERT_ATTRIB_TEX0 + k, j);
- }
- for (k = 0; k < Elements(arrayObj->VertexAttrib); k++) {
- check_array_data(ctx, &arrayObj->VertexAttrib[k],
- VERT_ATTRIB_GENERIC0 + k, j);
- }
- }
-
- if (_mesa_is_bufferobj(ctx->Array.ElementArrayBufferObj)) {
- ctx->Driver.UnmapBuffer(ctx, GL_ELEMENT_ARRAY_BUFFER_ARB,
- ctx->Array.ElementArrayBufferObj);
- }
-
- unmap_array_buffer(ctx, &arrayObj->Vertex);
- unmap_array_buffer(ctx, &arrayObj->Normal);
- unmap_array_buffer(ctx, &arrayObj->Color);
- for (k = 0; k < Elements(arrayObj->TexCoord); k++) {
- unmap_array_buffer(ctx, &arrayObj->TexCoord[k]);
- }
- for (k = 0; k < Elements(arrayObj->VertexAttrib); k++) {
- unmap_array_buffer(ctx, &arrayObj->VertexAttrib[k]);
- }
-}
-
-
-/**
- * Check array data, looking for NaNs, etc.
- */
-static void
-check_draw_arrays_data(struct gl_context *ctx, GLint start, GLsizei count)
-{
- /* TO DO */
-}
-
-
-/**
- * Print info/data for glDrawArrays(), for debugging.
- */
-static void
-print_draw_arrays(struct gl_context *ctx,
- GLenum mode, GLint start, GLsizei count)
-{
- struct vbo_context *vbo = vbo_context(ctx);
- struct vbo_exec_context *exec = &vbo->exec;
- int i;
-
- printf("vbo_exec_DrawArrays(mode 0x%x, start %d, count %d):\n",
- mode, start, count);
-
- for (i = 0; i < 32; i++) {
- GLuint bufName = exec->array.inputs[i]->BufferObj->Name;
- GLint stride = exec->array.inputs[i]->Stride;
- printf("attr %2d: size %d stride %d enabled %d "
- "ptr %p Bufobj %u\n",
- i,
- exec->array.inputs[i]->Size,
- stride,
- /*exec->array.inputs[i]->Enabled,*/
- exec->array.legacy_array[i]->Enabled,
- exec->array.inputs[i]->Ptr,
- bufName);
-
- if (bufName) {
- struct gl_buffer_object *buf = _mesa_lookup_bufferobj(ctx, bufName);
- GLubyte *p = ctx->Driver.MapBuffer(ctx, GL_ARRAY_BUFFER_ARB,
- GL_READ_ONLY_ARB, buf);
- int offset = (int) (GLintptr) exec->array.inputs[i]->Ptr;
- float *f = (float *) (p + offset);
- int *k = (int *) f;
- int i;
- int n = (count * stride) / 4;
- if (n > 32)
- n = 32;
- printf(" Data at offset %d:\n", offset);
- for (i = 0; i < n; i++) {
- printf(" float[%d] = 0x%08x %f\n", i, k[i], f[i]);
- }
- ctx->Driver.UnmapBuffer(ctx, GL_ARRAY_BUFFER_ARB, buf);
- }
- }
-}
-
-
-/**
- * Bind the VBO executor to the current vertex array object prior
- * to drawing.
- *
- * Just translate the arrayobj into a sane layout.
- */
-static void
-bind_array_obj(struct gl_context *ctx)
-{
- struct vbo_context *vbo = vbo_context(ctx);
- struct vbo_exec_context *exec = &vbo->exec;
- struct gl_array_object *arrayObj = ctx->Array.ArrayObj;
- GLuint i;
-
- /* TODO: Fix the ArrayObj struct to keep legacy arrays in an array
- * rather than as individual named arrays. Then this function can
- * go away.
- */
- exec->array.legacy_array[VERT_ATTRIB_POS] = &arrayObj->Vertex;
- exec->array.legacy_array[VERT_ATTRIB_WEIGHT] = &arrayObj->Weight;
- exec->array.legacy_array[VERT_ATTRIB_NORMAL] = &arrayObj->Normal;
- exec->array.legacy_array[VERT_ATTRIB_COLOR0] = &arrayObj->Color;
- exec->array.legacy_array[VERT_ATTRIB_COLOR1] = &arrayObj->SecondaryColor;
- exec->array.legacy_array[VERT_ATTRIB_FOG] = &arrayObj->FogCoord;
- exec->array.legacy_array[VERT_ATTRIB_COLOR_INDEX] = &arrayObj->Index;
- if (arrayObj->PointSize.Enabled) {
- /* this aliases COLOR_INDEX */
- exec->array.legacy_array[VERT_ATTRIB_POINT_SIZE] = &arrayObj->PointSize;
- }
- exec->array.legacy_array[VERT_ATTRIB_EDGEFLAG] = &arrayObj->EdgeFlag;
-
- for (i = 0; i < Elements(arrayObj->TexCoord); i++)
- exec->array.legacy_array[VERT_ATTRIB_TEX0 + i] = &arrayObj->TexCoord[i];
-
- for (i = 0; i < Elements(arrayObj->VertexAttrib); i++) {
- assert(i < Elements(exec->array.generic_array));
- exec->array.generic_array[i] = &arrayObj->VertexAttrib[i];
- }
-
- exec->array.array_obj = arrayObj->Name;
-}
-
-
-/**
- * Set the vbo->exec->inputs[] pointers to point to the enabled
- * vertex arrays. This depends on the current vertex program/shader
- * being executed because of whether or not generic vertex arrays
- * alias the conventional vertex arrays.
- * For arrays that aren't enabled, we set the input[attrib] pointer
- * to point at a zero-stride current value "array".
- */
-static void
-recalculate_input_bindings(struct gl_context *ctx)
-{
- struct vbo_context *vbo = vbo_context(ctx);
- struct vbo_exec_context *exec = &vbo->exec;
- const struct gl_client_array **inputs = &exec->array.inputs[0];
- GLbitfield const_inputs = 0x0;
- GLuint i;
-
- exec->array.program_mode = get_program_mode(ctx);
- exec->array.enabled_flags = ctx->Array.ArrayObj->_Enabled;
-
- switch (exec->array.program_mode) {
- case VP_NONE:
- /* When no vertex program is active (or the vertex program is generated
- * from fixed-function state). We put the material values into the
- * generic slots. This is the only situation where material values
- * are available as per-vertex attributes.
- */
- for (i = 0; i <= VERT_ATTRIB_TEX7; i++) {
- if (exec->array.legacy_array[i]->Enabled)
- inputs[i] = exec->array.legacy_array[i];
- else {
- inputs[i] = &vbo->legacy_currval[i];
- const_inputs |= 1 << i;
- }
- }
-
- for (i = 0; i < MAT_ATTRIB_MAX; i++) {
- inputs[VERT_ATTRIB_GENERIC0 + i] = &vbo->mat_currval[i];
- const_inputs |= 1 << (VERT_ATTRIB_GENERIC0 + i);
- }
-
- /* Could use just about anything, just to fill in the empty
- * slots:
- */
- for (i = MAT_ATTRIB_MAX; i < VERT_ATTRIB_MAX - VERT_ATTRIB_GENERIC0; i++) {
- inputs[VERT_ATTRIB_GENERIC0 + i] = &vbo->generic_currval[i];
- const_inputs |= 1 << (VERT_ATTRIB_GENERIC0 + i);
- }
-
- /* There is no need to make _NEW_ARRAY dirty here for the TnL program,
- * because it already takes care of invalidating the state necessary
- * to revalidate vertex arrays. Not marking the state as dirty also
- * improves performance (quite significantly in some apps).
- */
- if (!ctx->VertexProgram._MaintainTnlProgram)
- ctx->NewState |= _NEW_ARRAY;
- break;
-
- case VP_NV:
- /* NV_vertex_program - attribute arrays alias and override
- * conventional, legacy arrays. No materials, and the generic
- * slots are vacant.
- */
- for (i = 0; i <= VERT_ATTRIB_TEX7; i++) {
- if (exec->array.generic_array[i]->Enabled)
- inputs[i] = exec->array.generic_array[i];
- else if (exec->array.legacy_array[i]->Enabled)
- inputs[i] = exec->array.legacy_array[i];
- else {
- inputs[i] = &vbo->legacy_currval[i];
- const_inputs |= 1 << i;
- }
- }
-
- /* Could use just about anything, just to fill in the empty
- * slots:
- */
- for (i = VERT_ATTRIB_GENERIC0; i < VERT_ATTRIB_MAX; i++) {
- inputs[i] = &vbo->generic_currval[i - VERT_ATTRIB_GENERIC0];
- const_inputs |= 1 << i;
- }
-
- ctx->NewState |= _NEW_ARRAY;
- break;
-
- case VP_ARB:
- /* GL_ARB_vertex_program or GLSL vertex shader - Only the generic[0]
- * attribute array aliases and overrides the legacy position array.
- *
- * Otherwise, legacy attributes available in the legacy slots,
- * generic attributes in the generic slots and materials are not
- * available as per-vertex attributes.
- */
- if (exec->array.generic_array[0]->Enabled)
- inputs[0] = exec->array.generic_array[0];
- else if (exec->array.legacy_array[0]->Enabled)
- inputs[0] = exec->array.legacy_array[0];
- else {
- inputs[0] = &vbo->legacy_currval[0];
- const_inputs |= 1 << 0;
- }
-
- for (i = 1; i <= VERT_ATTRIB_TEX7; i++) {
- if (exec->array.legacy_array[i]->Enabled)
- inputs[i] = exec->array.legacy_array[i];
- else {
- inputs[i] = &vbo->legacy_currval[i];
- const_inputs |= 1 << i;
- }
- }
-
- for (i = 0; i < MAX_VERTEX_GENERIC_ATTRIBS; i++) {
- if (exec->array.generic_array[i]->Enabled)
- inputs[VERT_ATTRIB_GENERIC0 + i] = exec->array.generic_array[i];
- else {
- inputs[VERT_ATTRIB_GENERIC0 + i] = &vbo->generic_currval[i];
- const_inputs |= 1 << (VERT_ATTRIB_GENERIC0 + i);
- }
- }
-
- ctx->NewState |= _NEW_ARRAY;
- break;
- }
-
- _mesa_set_varying_vp_inputs( ctx, ~const_inputs );
-}
-
-
-/**
- * Examine the enabled vertex arrays to set the exec->array.inputs[] values.
- * These will point to the arrays to actually use for drawing. Some will
- * be user-provided arrays, other will be zero-stride const-valued arrays.
- * Note that this might set the _NEW_ARRAY dirty flag so state validation
- * must be done after this call.
- */
-static void
-bind_arrays(struct gl_context *ctx)
-{
- if (!ctx->Array.RebindArrays) {
- return;
- }
-
- bind_array_obj(ctx);
- recalculate_input_bindings(ctx);
- ctx->Array.RebindArrays = GL_FALSE;
-}
-
-
-/**
- * Helper function called by the other DrawArrays() functions below.
- * This is where we handle primitive restart for drawing non-indexed
- * arrays. If primitive restart is enabled, it typically means
- * splitting one DrawArrays() into two.
- */
-static void
-vbo_draw_arrays(struct gl_context *ctx, GLenum mode, GLint start,
- GLsizei count, GLuint numInstances)
-{
- struct vbo_context *vbo = vbo_context(ctx);
- struct vbo_exec_context *exec = &vbo->exec;
- struct _mesa_prim prim[2];
-
- bind_arrays(ctx);
-
- /* Again... because we may have changed the bitmask of per-vertex varying
- * attributes. If we regenerate the fixed-function vertex program now
- * we may be able to prune down the number of vertex attributes which we
- * need in the shader.
- */
- if (ctx->NewState)
- _mesa_update_state(ctx);
-
- prim[0].begin = 1;
- prim[0].end = 1;
- prim[0].weak = 0;
- prim[0].pad = 0;
- prim[0].mode = mode;
- prim[0].start = 0; /* filled in below */
- prim[0].count = 0; /* filled in below */
- prim[0].indexed = 0;
- prim[0].basevertex = 0;
- prim[0].num_instances = numInstances;
-
- /* Implement the primitive restart index */
- if (ctx->Array.PrimitiveRestart && ctx->Array.RestartIndex < count) {
- GLuint primCount = 0;
-
- if (ctx->Array.RestartIndex == start) {
- /* special case: RestartIndex at beginning */
- if (count > 1) {
- prim[0].start = start + 1;
- prim[0].count = count - 1;
- primCount = 1;
- }
- }
- else if (ctx->Array.RestartIndex == start + count - 1) {
- /* special case: RestartIndex at end */
- if (count > 1) {
- prim[0].start = start;
- prim[0].count = count - 1;
- primCount = 1;
- }
- }
- else {
- /* general case: RestartIndex in middle, split into two prims */
- prim[0].start = start;
- prim[0].count = ctx->Array.RestartIndex - start;
-
- prim[1] = prim[0];
- prim[1].start = ctx->Array.RestartIndex + 1;
- prim[1].count = count - prim[1].start;
-
- primCount = 2;
- }
-
- if (primCount > 0) {
- /* draw one or two prims */
- check_buffers_are_unmapped(exec->array.inputs);
- vbo->draw_prims(ctx, exec->array.inputs, prim, primCount, NULL,
- GL_TRUE, start, start + count - 1);
- }
- }
- else {
- /* no prim restart */
- prim[0].start = start;
- prim[0].count = count;
-
- check_buffers_are_unmapped(exec->array.inputs);
- vbo->draw_prims(ctx, exec->array.inputs, prim, 1, NULL,
- GL_TRUE, start, start + count - 1);
- }
-}
-
-
-
-/**
- * Called from glDrawArrays when in immediate mode (not display list mode).
- */
-static void GLAPIENTRY
-vbo_exec_DrawArrays(GLenum mode, GLint start, GLsizei count)
-{
- GET_CURRENT_CONTEXT(ctx);
-
- if (MESA_VERBOSE & VERBOSE_DRAW)
- _mesa_debug(ctx, "glDrawArrays(%s, %d, %d)\n",
- _mesa_lookup_enum_by_nr(mode), start, count);
-
- if (!_mesa_validate_DrawArrays( ctx, mode, start, count ))
- return;
-
- FLUSH_CURRENT( ctx, 0 );
-
- if (!_mesa_valid_to_render(ctx, "glDrawArrays")) {
- return;
- }
-
- if (0)
- check_draw_arrays_data(ctx, start, count);
-
- vbo_draw_arrays(ctx, mode, start, count, 1);
-
- if (0)
- print_draw_arrays(ctx, mode, start, count);
-}
-
-
-/**
- * Called from glDrawArraysInstanced when in immediate mode (not
- * display list mode).
- */
-static void GLAPIENTRY
-vbo_exec_DrawArraysInstanced(GLenum mode, GLint start, GLsizei count,
- GLsizei numInstances)
-{
- GET_CURRENT_CONTEXT(ctx);
-
- if (MESA_VERBOSE & VERBOSE_DRAW)
- _mesa_debug(ctx, "glDrawArraysInstanced(%s, %d, %d, %d)\n",
- _mesa_lookup_enum_by_nr(mode), start, count, numInstances);
-
- if (!_mesa_validate_DrawArraysInstanced(ctx, mode, start, count, numInstances))
- return;
-
- FLUSH_CURRENT( ctx, 0 );
-
- if (!_mesa_valid_to_render(ctx, "glDrawArraysInstanced")) {
- return;
- }
-
- if (0)
- check_draw_arrays_data(ctx, start, count);
-
- vbo_draw_arrays(ctx, mode, start, count, numInstances);
-
- if (0)
- print_draw_arrays(ctx, mode, start, count);
-}
-
-
-/**
- * Map GL_ELEMENT_ARRAY_BUFFER and print contents.
- * For debugging.
- */
-static void
-dump_element_buffer(struct gl_context *ctx, GLenum type)
-{
- const GLvoid *map = ctx->Driver.MapBuffer(ctx,
- GL_ELEMENT_ARRAY_BUFFER_ARB,
- GL_READ_ONLY,
- ctx->Array.ElementArrayBufferObj);
- switch (type) {
- case GL_UNSIGNED_BYTE:
- {
- const GLubyte *us = (const GLubyte *) map;
- GLint i;
- for (i = 0; i < ctx->Array.ElementArrayBufferObj->Size; i++) {
- printf("%02x ", us[i]);
- if (i % 32 == 31)
- printf("\n");
- }
- printf("\n");
- }
- break;
- case GL_UNSIGNED_SHORT:
- {
- const GLushort *us = (const GLushort *) map;
- GLint i;
- for (i = 0; i < ctx->Array.ElementArrayBufferObj->Size / 2; i++) {
- printf("%04x ", us[i]);
- if (i % 16 == 15)
- printf("\n");
- }
- printf("\n");
- }
- break;
- case GL_UNSIGNED_INT:
- {
- const GLuint *us = (const GLuint *) map;
- GLint i;
- for (i = 0; i < ctx->Array.ElementArrayBufferObj->Size / 4; i++) {
- printf("%08x ", us[i]);
- if (i % 8 == 7)
- printf("\n");
- }
- printf("\n");
- }
- break;
- default:
- ;
- }
-
- ctx->Driver.UnmapBuffer(ctx, GL_ELEMENT_ARRAY_BUFFER_ARB,
- ctx->Array.ElementArrayBufferObj);
-}
-
-
-/**
- * Inner support for both _mesa_DrawElements and _mesa_DrawRangeElements.
- * Do the rendering for a glDrawElements or glDrawRangeElements call after
- * we've validated buffer bounds, etc.
- */
-static void
-vbo_validated_drawrangeelements(struct gl_context *ctx, GLenum mode,
- GLboolean index_bounds_valid,
- GLuint start, GLuint end,
- GLsizei count, GLenum type,
- const GLvoid *indices,
- GLint basevertex, GLint numInstances)
-{
- struct vbo_context *vbo = vbo_context(ctx);
- struct vbo_exec_context *exec = &vbo->exec;
- struct _mesa_index_buffer ib;
- struct _mesa_prim prim[1];
-
- FLUSH_CURRENT( ctx, 0 );
-
- if (!_mesa_valid_to_render(ctx, "glDraw[Range]Elements")) {
- return;
- }
-
- bind_arrays( ctx );
-
- /* check for dirty state again */
- if (ctx->NewState)
- _mesa_update_state( ctx );
-
- ib.count = count;
- ib.type = type;
- ib.obj = ctx->Array.ElementArrayBufferObj;
- ib.ptr = indices;
-
- prim[0].begin = 1;
- prim[0].end = 1;
- prim[0].weak = 0;
- prim[0].pad = 0;
- prim[0].mode = mode;
- prim[0].start = 0;
- prim[0].count = count;
- prim[0].indexed = 1;
- prim[0].basevertex = basevertex;
- prim[0].num_instances = numInstances;
-
- /* Need to give special consideration to rendering a range of
- * indices starting somewhere above zero. Typically the
- * application is issuing multiple DrawRangeElements() to draw
- * successive primitives layed out linearly in the vertex arrays.
- * Unless the vertex arrays are all in a VBO (or locked as with
- * CVA), the OpenGL semantics imply that we need to re-read or
- * re-upload the vertex data on each draw call.
- *
- * In the case of hardware tnl, we want to avoid starting the
- * upload at zero, as it will mean every draw call uploads an
- * increasing amount of not-used vertex data. Worse - in the
- * software tnl module, all those vertices might be transformed and
- * lit but never rendered.
- *
- * If we just upload or transform the vertices in start..end,
- * however, the indices will be incorrect.
- *
- * At this level, we don't know exactly what the requirements of
- * the backend are going to be, though it will likely boil down to
- * either:
- *
- * 1) Do nothing, everything is in a VBO and is processed once
- * only.
- *
- * 2) Adjust the indices and vertex arrays so that start becomes
- * zero.
- *
- * Rather than doing anything here, I'll provide a helper function
- * for the latter case elsewhere.
- */
-
- check_buffers_are_unmapped(exec->array.inputs);
- vbo->draw_prims( ctx, exec->array.inputs, prim, 1, &ib,
- index_bounds_valid, start, end );
-}
-
-
-/**
- * Called by glDrawRangeElementsBaseVertex() in immediate mode.
- */
-static void GLAPIENTRY
-vbo_exec_DrawRangeElementsBaseVertex(GLenum mode,
- GLuint start, GLuint end,
- GLsizei count, GLenum type,
- const GLvoid *indices,
- GLint basevertex)
-{
- static GLuint warnCount = 0;
- GET_CURRENT_CONTEXT(ctx);
-
- if (MESA_VERBOSE & VERBOSE_DRAW)
- _mesa_debug(ctx,
- "glDrawRangeElementsBaseVertex(%s, %u, %u, %d, %s, %p, %d)\n",
- _mesa_lookup_enum_by_nr(mode), start, end, count,
- _mesa_lookup_enum_by_nr(type), indices, basevertex);
-
- if (!_mesa_validate_DrawRangeElements( ctx, mode, start, end, count,
- type, indices, basevertex ))
- return;
-
- /* NOTE: It's important that 'end' is a reasonable value.
- * in _tnl_draw_prims(), we use end to determine how many vertices
- * to transform. If it's too large, we can unnecessarily split prims
- * or we can read/write out of memory in several different places!
- */
-
- /* Catch/fix some potential user errors */
- if (type == GL_UNSIGNED_BYTE) {
- start = MIN2(start, 0xff);
- end = MIN2(end, 0xff);
- }
- else if (type == GL_UNSIGNED_SHORT) {
- start = MIN2(start, 0xffff);
- end = MIN2(end, 0xffff);
- }
-
- if (end >= ctx->Array.ArrayObj->_MaxElement) {
- /* the max element is out of bounds of one or more enabled arrays */
- warnCount++;
-
- if (warnCount < 10) {
- _mesa_warning(ctx, "glDraw[Range]Elements(start %u, end %u, count %d, "
- "type 0x%x, indices=%p)\n"
- "\tend is out of bounds (max=%u) "
- "Element Buffer %u (size %d)\n"
- "\tThis should probably be fixed in the application.",
- start, end, count, type, indices,
- ctx->Array.ArrayObj->_MaxElement - 1,
- ctx->Array.ElementArrayBufferObj->Name,
- (int) ctx->Array.ElementArrayBufferObj->Size);
- }
-
- if (0)
- dump_element_buffer(ctx, type);
-
- if (0)
- _mesa_print_arrays(ctx);
-
-#ifdef DEBUG
- /* 'end' was out of bounds, but now let's check the actual array
- * indexes to see if any of them are out of bounds.
- */
- {
- GLuint max = _mesa_max_buffer_index(ctx, count, type, indices,
- ctx->Array.ElementArrayBufferObj);
- if (max >= ctx->Array.ArrayObj->_MaxElement) {
- if (warnCount < 10) {
- _mesa_warning(ctx, "glDraw[Range]Elements(start %u, end %u, "
- "count %d, type 0x%x, indices=%p)\n"
- "\tindex=%u is out of bounds (max=%u) "
- "Element Buffer %u (size %d)\n"
- "\tSkipping the glDrawRangeElements() call",
- start, end, count, type, indices, max,
- ctx->Array.ArrayObj->_MaxElement - 1,
- ctx->Array.ElementArrayBufferObj->Name,
- (int) ctx->Array.ElementArrayBufferObj->Size);
- }
- }
- /* XXX we could also find the min index and compare to 'start'
- * to see if start is correct. But it's more likely to get the
- * upper bound wrong.
- */
- }
-#endif
-
- /* Set 'end' to the max possible legal value */
- assert(ctx->Array.ArrayObj->_MaxElement >= 1);
- end = ctx->Array.ArrayObj->_MaxElement - 1;
- }
- else if (0) {
- printf("glDraw[Range]Elements{,BaseVertex}"
- "(start %u, end %u, type 0x%x, count %d) ElemBuf %u, "
- "base %d\n",
- start, end, type, count,
- ctx->Array.ElementArrayBufferObj->Name,
- basevertex);
- }
-
-#if 0
- check_draw_elements_data(ctx, count, type, indices);
-#else
- (void) check_draw_elements_data;
-#endif
-
- vbo_validated_drawrangeelements(ctx, mode, GL_TRUE, start, end,
- count, type, indices, basevertex, 1);
-}
-
-
-/**
- * Called by glDrawRangeElements() in immediate mode.
- */
-static void GLAPIENTRY
-vbo_exec_DrawRangeElements(GLenum mode, GLuint start, GLuint end,
- GLsizei count, GLenum type, const GLvoid *indices)
-{
- GET_CURRENT_CONTEXT(ctx);
-
- if (MESA_VERBOSE & VERBOSE_DRAW)
- _mesa_debug(ctx,
- "glDrawRangeElements(%s, %u, %u, %d, %s, %p)\n",
- _mesa_lookup_enum_by_nr(mode), start, end, count,
- _mesa_lookup_enum_by_nr(type), indices);
-
- vbo_exec_DrawRangeElementsBaseVertex(mode, start, end, count, type,
- indices, 0);
-}
-
-
-/**
- * Called by glDrawElements() in immediate mode.
- */
-static void GLAPIENTRY
-vbo_exec_DrawElements(GLenum mode, GLsizei count, GLenum type,
- const GLvoid *indices)
-{
- GET_CURRENT_CONTEXT(ctx);
-
- if (MESA_VERBOSE & VERBOSE_DRAW)
- _mesa_debug(ctx, "glDrawElements(%s, %u, %s, %p)\n",
- _mesa_lookup_enum_by_nr(mode), count,
- _mesa_lookup_enum_by_nr(type), indices);
-
- if (!_mesa_validate_DrawElements( ctx, mode, count, type, indices, 0 ))
- return;
-
- vbo_validated_drawrangeelements(ctx, mode, GL_FALSE, ~0, ~0,
- count, type, indices, 0, 1);
-}
-
-
-/**
- * Called by glDrawElementsBaseVertex() in immediate mode.
- */
-static void GLAPIENTRY
-vbo_exec_DrawElementsBaseVertex(GLenum mode, GLsizei count, GLenum type,
- const GLvoid *indices, GLint basevertex)
-{
- GET_CURRENT_CONTEXT(ctx);
-
- if (MESA_VERBOSE & VERBOSE_DRAW)
- _mesa_debug(ctx, "glDrawElementsBaseVertex(%s, %d, %s, %p, %d)\n",
- _mesa_lookup_enum_by_nr(mode), count,
- _mesa_lookup_enum_by_nr(type), indices, basevertex);
-
- if (!_mesa_validate_DrawElements( ctx, mode, count, type, indices,
- basevertex ))
- return;
-
- vbo_validated_drawrangeelements(ctx, mode, GL_FALSE, ~0, ~0,
- count, type, indices, basevertex, 1);
-}
-
-
-/**
- * Called by glDrawElementsInstanced() in immediate mode.
- */
-static void GLAPIENTRY
-vbo_exec_DrawElementsInstanced(GLenum mode, GLsizei count, GLenum type,
- const GLvoid *indices, GLsizei numInstances)
-{
- GET_CURRENT_CONTEXT(ctx);
-
- if (MESA_VERBOSE & VERBOSE_DRAW)
- _mesa_debug(ctx, "glDrawElementsInstanced(%s, %d, %s, %p, %d)\n",
- _mesa_lookup_enum_by_nr(mode), count,
- _mesa_lookup_enum_by_nr(type), indices, numInstances);
-
- if (!_mesa_validate_DrawElementsInstanced(ctx, mode, count, type, indices,
- numInstances))
- return;
-
- vbo_validated_drawrangeelements(ctx, mode, GL_FALSE, ~0, ~0,
- count, type, indices, 0, numInstances);
-}
-
-
-/**
- * Inner support for both _mesa_MultiDrawElements() and
- * _mesa_MultiDrawRangeElements().
- * This does the actual rendering after we've checked array indexes, etc.
- */
-static void
-vbo_validated_multidrawelements(struct gl_context *ctx, GLenum mode,
- const GLsizei *count, GLenum type,
- const GLvoid **indices, GLsizei primcount,
- const GLint *basevertex)
-{
- struct vbo_context *vbo = vbo_context(ctx);
- struct vbo_exec_context *exec = &vbo->exec;
- struct _mesa_index_buffer ib;
- struct _mesa_prim *prim;
- unsigned int index_type_size = 0;
- uintptr_t min_index_ptr, max_index_ptr;
- GLboolean fallback = GL_FALSE;
- int i;
-
- if (primcount == 0)
- return;
-
- FLUSH_CURRENT( ctx, 0 );
-
- if (!_mesa_valid_to_render(ctx, "glMultiDrawElements")) {
- return;
- }
-
- prim = calloc(1, primcount * sizeof(*prim));
- if (prim == NULL) {
- _mesa_error(ctx, GL_OUT_OF_MEMORY, "glMultiDrawElements");
- return;
- }
-
- /* Decide if we can do this all as one set of primitives sharing the
- * same index buffer, or if we have to reset the index pointer per
- * primitive.
- */
- bind_arrays( ctx );
-
- /* check for dirty state again */
- if (ctx->NewState)
- _mesa_update_state( ctx );
-
- switch (type) {
- case GL_UNSIGNED_INT:
- index_type_size = 4;
- break;
- case GL_UNSIGNED_SHORT:
- index_type_size = 2;
- break;
- case GL_UNSIGNED_BYTE:
- index_type_size = 1;
- break;
- default:
- assert(0);
- }
-
- min_index_ptr = (uintptr_t)indices[0];
- max_index_ptr = 0;
- for (i = 0; i < primcount; i++) {
- min_index_ptr = MIN2(min_index_ptr, (uintptr_t)indices[i]);
- max_index_ptr = MAX2(max_index_ptr, (uintptr_t)indices[i] +
- index_type_size * count[i]);
- }
-
- /* Check if we can handle this thing as a bunch of index offsets from the
- * same index pointer. If we can't, then we have to fall back to doing
- * a draw_prims per primitive.
- * Check that the difference between each prim's indexes is a multiple of
- * the index/element size.
- */
- if (index_type_size != 1) {
- for (i = 0; i < primcount; i++) {
- if ((((uintptr_t)indices[i] - min_index_ptr) % index_type_size) != 0) {
- fallback = GL_TRUE;
- break;
- }
- }
- }
-
- /* If the index buffer isn't in a VBO, then treating the application's
- * subranges of the index buffer as one large index buffer may lead to
- * us reading unmapped memory.
- */
- if (!_mesa_is_bufferobj(ctx->Array.ElementArrayBufferObj))
- fallback = GL_TRUE;
-
- if (!fallback) {
- ib.count = (max_index_ptr - min_index_ptr) / index_type_size;
- ib.type = type;
- ib.obj = ctx->Array.ElementArrayBufferObj;
- ib.ptr = (void *)min_index_ptr;
-
- for (i = 0; i < primcount; i++) {
- prim[i].begin = (i == 0);
- prim[i].end = (i == primcount - 1);
- prim[i].weak = 0;
- prim[i].pad = 0;
- prim[i].mode = mode;
- prim[i].start = ((uintptr_t)indices[i] - min_index_ptr) / index_type_size;
- prim[i].count = count[i];
- prim[i].indexed = 1;
- prim[i].num_instances = 1;
- if (basevertex != NULL)
- prim[i].basevertex = basevertex[i];
- else
- prim[i].basevertex = 0;
- }
-
- check_buffers_are_unmapped(exec->array.inputs);
- vbo->draw_prims(ctx, exec->array.inputs, prim, primcount, &ib,
- GL_FALSE, ~0, ~0);
- } else {
- /* render one prim at a time */
- for (i = 0; i < primcount; i++) {
- ib.count = count[i];
- ib.type = type;
- ib.obj = ctx->Array.ElementArrayBufferObj;
- ib.ptr = indices[i];
-
- prim[0].begin = 1;
- prim[0].end = 1;
- prim[0].weak = 0;
- prim[0].pad = 0;
- prim[0].mode = mode;
- prim[0].start = 0;
- prim[0].count = count[i];
- prim[0].indexed = 1;
- prim[0].num_instances = 1;
- if (basevertex != NULL)
- prim[0].basevertex = basevertex[i];
- else
- prim[0].basevertex = 0;
-
- check_buffers_are_unmapped(exec->array.inputs);
- vbo->draw_prims(ctx, exec->array.inputs, prim, 1, &ib,
- GL_FALSE, ~0, ~0);
- }
- }
-
- free(prim);
-}
-
-
-static void GLAPIENTRY
-vbo_exec_MultiDrawElements(GLenum mode,
- const GLsizei *count, GLenum type,
- const GLvoid **indices,
- GLsizei primcount)
-{
- GET_CURRENT_CONTEXT(ctx);
- GLint i;
-
- ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
-
- for (i = 0; i < primcount; i++) {
- if (!_mesa_validate_DrawElements(ctx, mode, count[i], type, indices[i],
- 0))
- return;
- }
-
- vbo_validated_multidrawelements(ctx, mode, count, type, indices, primcount,
- NULL);
-}
-
-
-static void GLAPIENTRY
-vbo_exec_MultiDrawElementsBaseVertex(GLenum mode,
- const GLsizei *count, GLenum type,
- const GLvoid **indices,
- GLsizei primcount,
- const GLsizei *basevertex)
-{
- GET_CURRENT_CONTEXT(ctx);
- GLint i;
-
- ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
-
- for (i = 0; i < primcount; i++) {
- if (!_mesa_validate_DrawElements(ctx, mode, count[i], type, indices[i],
- basevertex[i]))
- return;
- }
-
- vbo_validated_multidrawelements(ctx, mode, count, type, indices, primcount,
- basevertex);
-}
-
-
-/**
- * Plug in the immediate-mode vertex array drawing commands into the
- * givven vbo_exec_context object.
- */
-void
-vbo_exec_array_init( struct vbo_exec_context *exec )
-{
- exec->vtxfmt.DrawArrays = vbo_exec_DrawArrays;
- exec->vtxfmt.DrawElements = vbo_exec_DrawElements;
- exec->vtxfmt.DrawRangeElements = vbo_exec_DrawRangeElements;
- exec->vtxfmt.MultiDrawElementsEXT = vbo_exec_MultiDrawElements;
- exec->vtxfmt.DrawElementsBaseVertex = vbo_exec_DrawElementsBaseVertex;
- exec->vtxfmt.DrawRangeElementsBaseVertex = vbo_exec_DrawRangeElementsBaseVertex;
- exec->vtxfmt.MultiDrawElementsBaseVertex = vbo_exec_MultiDrawElementsBaseVertex;
- exec->vtxfmt.DrawArraysInstanced = vbo_exec_DrawArraysInstanced;
- exec->vtxfmt.DrawElementsInstanced = vbo_exec_DrawElementsInstanced;
-}
-
-
-void
-vbo_exec_array_destroy( struct vbo_exec_context *exec )
-{
- /* nothing to do */
-}
-
-
-
-/**
- * The following functions are only used for OpenGL ES 1/2 support.
- * And some aren't even supported (yet) in ES 1/2.
- */
-
-
-void GLAPIENTRY
-_mesa_DrawArrays(GLenum mode, GLint first, GLsizei count)
-{
- vbo_exec_DrawArrays(mode, first, count);
-}
-
-
-void GLAPIENTRY
-_mesa_DrawElements(GLenum mode, GLsizei count, GLenum type,
- const GLvoid *indices)
-{
- vbo_exec_DrawElements(mode, count, type, indices);
-}
-
-
-void GLAPIENTRY
-_mesa_DrawElementsBaseVertex(GLenum mode, GLsizei count, GLenum type,
- const GLvoid *indices, GLint basevertex)
-{
- vbo_exec_DrawElementsBaseVertex(mode, count, type, indices, basevertex);
-}
-
-
-void GLAPIENTRY
-_mesa_DrawRangeElements(GLenum mode, GLuint start, GLuint end, GLsizei count,
- GLenum type, const GLvoid *indices)
-{
- vbo_exec_DrawRangeElements(mode, start, end, count, type, indices);
-}
-
-
-void GLAPIENTRY
-_mesa_DrawRangeElementsBaseVertex(GLenum mode, GLuint start, GLuint end,
- GLsizei count, GLenum type,
- const GLvoid *indices, GLint basevertex)
-{
- vbo_exec_DrawRangeElementsBaseVertex(mode, start, end, count, type,
- indices, basevertex);
-}
-
-
-void GLAPIENTRY
-_mesa_MultiDrawElementsEXT(GLenum mode, const GLsizei *count, GLenum type,
- const GLvoid **indices, GLsizei primcount)
-{
- vbo_exec_MultiDrawElements(mode, count, type, indices, primcount);
-}
-
-
-void GLAPIENTRY
-_mesa_MultiDrawElementsBaseVertex(GLenum mode,
- const GLsizei *count, GLenum type,
- const GLvoid **indices, GLsizei primcount,
- const GLint *basevertex)
-{
- vbo_exec_MultiDrawElementsBaseVertex(mode, count, type, indices,
- primcount, basevertex);
-}
+/**************************************************************************
+ *
+ * Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas.
+ * Copyright 2009 VMware, Inc.
+ * All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sub license, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the
+ * next paragraph) shall be included in all copies or substantial portions
+ * of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
+ * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
+ * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+ * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+ * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ *
+ **************************************************************************/
+
+#include "main/glheader.h"
+#include "main/context.h"
+#include "main/state.h"
+#include "main/api_validate.h"
+#include "main/varray.h"
+#include "main/bufferobj.h"
+#include "main/enums.h"
+#include "main/macros.h"
+
+#include "vbo_context.h"
+
+
+/**
+ * All vertex buffers should be in an unmapped state when we're about
+ * to draw. This debug function checks that.
+ */
+static void
+check_buffers_are_unmapped(const struct gl_client_array **inputs)
+{
+#ifdef DEBUG
+ GLuint i;
+
+ for (i = 0; i < VERT_ATTRIB_MAX; i++) {
+ if (inputs[i]) {
+ struct gl_buffer_object *obj = inputs[i]->BufferObj;
+ assert(!_mesa_bufferobj_mapped(obj));
+ (void) obj;
+ }
+ }
+#endif
+}
+
+
+/**
+ * A debug function that may be called from other parts of Mesa as
+ * needed during debugging.
+ */
+void
+vbo_check_buffers_are_unmapped(struct gl_context *ctx)
+{
+ struct vbo_context *vbo = vbo_context(ctx);
+ struct vbo_exec_context *exec = &vbo->exec;
+ /* check the current vertex arrays */
+ check_buffers_are_unmapped(exec->array.inputs);
+ /* check the current glBegin/glVertex/glEnd-style VBO */
+ assert(!_mesa_bufferobj_mapped(exec->vtx.bufferobj));
+}
+
+
+
+/**
+ * Compute min and max elements by scanning the index buffer for
+ * glDraw[Range]Elements() calls.
+ * If primitive restart is enabled, we need to ignore restart
+ * indexes when computing min/max.
+ */
+void
+vbo_get_minmax_index(struct gl_context *ctx,
+ const struct _mesa_prim *prim,
+ const struct _mesa_index_buffer *ib,
+ GLuint *min_index, GLuint *max_index)
+{
+ const GLboolean restart = ctx->Array.PrimitiveRestart;
+ const GLuint restartIndex = ctx->Array.RestartIndex;
+ const GLuint count = prim->count;
+ const void *indices;
+ GLuint i;
+
+ if (_mesa_is_bufferobj(ib->obj)) {
+ const GLvoid *map =
+ ctx->Driver.MapBuffer(ctx, GL_ELEMENT_ARRAY_BUFFER_ARB,
+ GL_READ_ONLY, ib->obj);
+ indices = ADD_POINTERS(map, ib->ptr);
+ } else {
+ indices = ib->ptr;
+ }
+
+ switch (ib->type) {
+ case GL_UNSIGNED_INT: {
+ const GLuint *ui_indices = (const GLuint *)indices;
+ GLuint max_ui = 0;
+ GLuint min_ui = ~0U;
+ if (restart) {
+ for (i = 0; i < count; i++) {
+ if (ui_indices[i] != restartIndex) {
+ if (ui_indices[i] > max_ui) max_ui = ui_indices[i];
+ if (ui_indices[i] < min_ui) min_ui = ui_indices[i];
+ }
+ }
+ }
+ else {
+ for (i = 0; i < count; i++) {
+ if (ui_indices[i] > max_ui) max_ui = ui_indices[i];
+ if (ui_indices[i] < min_ui) min_ui = ui_indices[i];
+ }
+ }
+ *min_index = min_ui;
+ *max_index = max_ui;
+ break;
+ }
+ case GL_UNSIGNED_SHORT: {
+ const GLushort *us_indices = (const GLushort *)indices;
+ GLuint max_us = 0;
+ GLuint min_us = ~0U;
+ if (restart) {
+ for (i = 0; i < count; i++) {
+ if (us_indices[i] != restartIndex) {
+ if (us_indices[i] > max_us) max_us = us_indices[i];
+ if (us_indices[i] < min_us) min_us = us_indices[i];
+ }
+ }
+ }
+ else {
+ for (i = 0; i < count; i++) {
+ if (us_indices[i] > max_us) max_us = us_indices[i];
+ if (us_indices[i] < min_us) min_us = us_indices[i];
+ }
+ }
+ *min_index = min_us;
+ *max_index = max_us;
+ break;
+ }
+ case GL_UNSIGNED_BYTE: {
+ const GLubyte *ub_indices = (const GLubyte *)indices;
+ GLuint max_ub = 0;
+ GLuint min_ub = ~0U;
+ if (restart) {
+ for (i = 0; i < count; i++) {
+ if (ub_indices[i] != restartIndex) {
+ if (ub_indices[i] > max_ub) max_ub = ub_indices[i];
+ if (ub_indices[i] < min_ub) min_ub = ub_indices[i];
+ }
+ }
+ }
+ else {
+ for (i = 0; i < count; i++) {
+ if (ub_indices[i] > max_ub) max_ub = ub_indices[i];
+ if (ub_indices[i] < min_ub) min_ub = ub_indices[i];
+ }
+ }
+ *min_index = min_ub;
+ *max_index = max_ub;
+ break;
+ }
+ default:
+ assert(0);
+ break;
+ }
+
+ if (_mesa_is_bufferobj(ib->obj)) {
+ ctx->Driver.UnmapBuffer(ctx, GL_ELEMENT_ARRAY_BUFFER_ARB, ib->obj);
+ }
+}
+
+
+/**
+ * Check that element 'j' of the array has reasonable data.
+ * Map VBO if needed.
+ * For debugging purposes; not normally used.
+ */
+static void
+check_array_data(struct gl_context *ctx, struct gl_client_array *array,
+ GLuint attrib, GLuint j)
+{
+ if (array->Enabled) {
+ const void *data = array->Ptr;
+ if (_mesa_is_bufferobj(array->BufferObj)) {
+ if (!array->BufferObj->Pointer) {
+ /* need to map now */
+ array->BufferObj->Pointer =
+ ctx->Driver.MapBuffer(ctx, GL_ARRAY_BUFFER_ARB,
+ GL_READ_ONLY, array->BufferObj);
+ }
+ data = ADD_POINTERS(data, array->BufferObj->Pointer);
+ }
+ switch (array->Type) {
+ case GL_FLOAT:
+ {
+ GLfloat *f = (GLfloat *) ((GLubyte *) data + array->StrideB * j);
+ GLint k;
+ for (k = 0; k < array->Size; k++) {
+ if (IS_INF_OR_NAN(f[k]) ||
+ f[k] >= 1.0e20 || f[k] <= -1.0e10) {
+ printf("Bad array data:\n");
+ printf(" Element[%u].%u = %f\n", j, k, f[k]);
+ printf(" Array %u at %p\n", attrib, (void* ) array);
+ printf(" Type 0x%x, Size %d, Stride %d\n",
+ array->Type, array->Size, array->Stride);
+ printf(" Address/offset %p in Buffer Object %u\n",
+ array->Ptr, array->BufferObj->Name);
+ f[k] = 1.0; /* XXX replace the bad value! */
+ }
+ /*assert(!IS_INF_OR_NAN(f[k]));*/
+ }
+ }
+ break;
+ default:
+ ;
+ }
+ }
+}
+
+
+/**
+ * Unmap the buffer object referenced by given array, if mapped.
+ */
+static void
+unmap_array_buffer(struct gl_context *ctx, struct gl_client_array *array)
+{
+ if (array->Enabled &&
+ _mesa_is_bufferobj(array->BufferObj) &&
+ _mesa_bufferobj_mapped(array->BufferObj)) {
+ ctx->Driver.UnmapBuffer(ctx, GL_ARRAY_BUFFER_ARB, array->BufferObj);
+ }
+}
+
+
+/**
+ * Examine the array's data for NaNs, etc.
+ * For debug purposes; not normally used.
+ */
+static void
+check_draw_elements_data(struct gl_context *ctx, GLsizei count, GLenum elemType,
+ const void *elements, GLint basevertex)
+{
+ struct gl_array_object *arrayObj = ctx->Array.ArrayObj;
+ const void *elemMap;
+ GLint i, k;
+
+ if (_mesa_is_bufferobj(ctx->Array.ElementArrayBufferObj)) {
+ elemMap = ctx->Driver.MapBuffer(ctx,
+ GL_ELEMENT_ARRAY_BUFFER_ARB,
+ GL_READ_ONLY,
+ ctx->Array.ElementArrayBufferObj);
+ elements = ADD_POINTERS(elements, elemMap);
+ }
+
+ for (i = 0; i < count; i++) {
+ GLuint j;
+
+ /* j = element[i] */
+ switch (elemType) {
+ case GL_UNSIGNED_BYTE:
+ j = ((const GLubyte *) elements)[i];
+ break;
+ case GL_UNSIGNED_SHORT:
+ j = ((const GLushort *) elements)[i];
+ break;
+ case GL_UNSIGNED_INT:
+ j = ((const GLuint *) elements)[i];
+ break;
+ default:
+ assert(0);
+ }
+
+ /* check element j of each enabled array */
+ check_array_data(ctx, &arrayObj->Vertex, VERT_ATTRIB_POS, j);
+ check_array_data(ctx, &arrayObj->Normal, VERT_ATTRIB_NORMAL, j);
+ check_array_data(ctx, &arrayObj->Color, VERT_ATTRIB_COLOR0, j);
+ check_array_data(ctx, &arrayObj->SecondaryColor, VERT_ATTRIB_COLOR1, j);
+ for (k = 0; k < Elements(arrayObj->TexCoord); k++) {
+ check_array_data(ctx, &arrayObj->TexCoord[k], VERT_ATTRIB_TEX0 + k, j);
+ }
+ for (k = 0; k < Elements(arrayObj->VertexAttrib); k++) {
+ check_array_data(ctx, &arrayObj->VertexAttrib[k],
+ VERT_ATTRIB_GENERIC0 + k, j);
+ }
+ }
+
+ if (_mesa_is_bufferobj(ctx->Array.ElementArrayBufferObj)) {
+ ctx->Driver.UnmapBuffer(ctx, GL_ELEMENT_ARRAY_BUFFER_ARB,
+ ctx->Array.ElementArrayBufferObj);
+ }
+
+ unmap_array_buffer(ctx, &arrayObj->Vertex);
+ unmap_array_buffer(ctx, &arrayObj->Normal);
+ unmap_array_buffer(ctx, &arrayObj->Color);
+ for (k = 0; k < Elements(arrayObj->TexCoord); k++) {
+ unmap_array_buffer(ctx, &arrayObj->TexCoord[k]);
+ }
+ for (k = 0; k < Elements(arrayObj->VertexAttrib); k++) {
+ unmap_array_buffer(ctx, &arrayObj->VertexAttrib[k]);
+ }
+}
+
+
+/**
+ * Check array data, looking for NaNs, etc.
+ */
+static void
+check_draw_arrays_data(struct gl_context *ctx, GLint start, GLsizei count)
+{
+ /* TO DO */
+}
+
+
+/**
+ * Print info/data for glDrawArrays(), for debugging.
+ */
+static void
+print_draw_arrays(struct gl_context *ctx,
+ GLenum mode, GLint start, GLsizei count)
+{
+ struct vbo_context *vbo = vbo_context(ctx);
+ struct vbo_exec_context *exec = &vbo->exec;
+ int i;
+
+ printf("vbo_exec_DrawArrays(mode 0x%x, start %d, count %d):\n",
+ mode, start, count);
+
+ for (i = 0; i < 32; i++) {
+ GLuint bufName = exec->array.inputs[i]->BufferObj->Name;
+ GLint stride = exec->array.inputs[i]->Stride;
+ printf("attr %2d: size %d stride %d enabled %d "
+ "ptr %p Bufobj %u\n",
+ i,
+ exec->array.inputs[i]->Size,
+ stride,
+ /*exec->array.inputs[i]->Enabled,*/
+ exec->array.legacy_array[i]->Enabled,
+ exec->array.inputs[i]->Ptr,
+ bufName);
+
+ if (bufName) {
+ struct gl_buffer_object *buf = _mesa_lookup_bufferobj(ctx, bufName);
+ GLubyte *p = ctx->Driver.MapBuffer(ctx, GL_ARRAY_BUFFER_ARB,
+ GL_READ_ONLY_ARB, buf);
+ int offset = (int) (GLintptr) exec->array.inputs[i]->Ptr;
+ float *f = (float *) (p + offset);
+ int *k = (int *) f;
+ int i;
+ int n = (count * stride) / 4;
+ if (n > 32)
+ n = 32;
+ printf(" Data at offset %d:\n", offset);
+ for (i = 0; i < n; i++) {
+ printf(" float[%d] = 0x%08x %f\n", i, k[i], f[i]);
+ }
+ ctx->Driver.UnmapBuffer(ctx, GL_ARRAY_BUFFER_ARB, buf);
+ }
+ }
+}
+
+
+/**
+ * Bind the VBO executor to the current vertex array object prior
+ * to drawing.
+ *
+ * Just translate the arrayobj into a sane layout.
+ */
+static void
+bind_array_obj(struct gl_context *ctx)
+{
+ struct vbo_context *vbo = vbo_context(ctx);
+ struct vbo_exec_context *exec = &vbo->exec;
+ struct gl_array_object *arrayObj = ctx->Array.ArrayObj;
+ GLuint i;
+
+ /* TODO: Fix the ArrayObj struct to keep legacy arrays in an array
+ * rather than as individual named arrays. Then this function can
+ * go away.
+ */
+ exec->array.legacy_array[VERT_ATTRIB_POS] = &arrayObj->Vertex;
+ exec->array.legacy_array[VERT_ATTRIB_WEIGHT] = &arrayObj->Weight;
+ exec->array.legacy_array[VERT_ATTRIB_NORMAL] = &arrayObj->Normal;
+ exec->array.legacy_array[VERT_ATTRIB_COLOR0] = &arrayObj->Color;
+ exec->array.legacy_array[VERT_ATTRIB_COLOR1] = &arrayObj->SecondaryColor;
+ exec->array.legacy_array[VERT_ATTRIB_FOG] = &arrayObj->FogCoord;
+ exec->array.legacy_array[VERT_ATTRIB_COLOR_INDEX] = &arrayObj->Index;
+ if (arrayObj->PointSize.Enabled) {
+ /* this aliases COLOR_INDEX */
+ exec->array.legacy_array[VERT_ATTRIB_POINT_SIZE] = &arrayObj->PointSize;
+ }
+ exec->array.legacy_array[VERT_ATTRIB_EDGEFLAG] = &arrayObj->EdgeFlag;
+
+ for (i = 0; i < Elements(arrayObj->TexCoord); i++)
+ exec->array.legacy_array[VERT_ATTRIB_TEX0 + i] = &arrayObj->TexCoord[i];
+
+ for (i = 0; i < Elements(arrayObj->VertexAttrib); i++) {
+ assert(i < Elements(exec->array.generic_array));
+ exec->array.generic_array[i] = &arrayObj->VertexAttrib[i];
+ }
+
+ exec->array.array_obj = arrayObj->Name;
+}
+
+
+/**
+ * Set the vbo->exec->inputs[] pointers to point to the enabled
+ * vertex arrays. This depends on the current vertex program/shader
+ * being executed because of whether or not generic vertex arrays
+ * alias the conventional vertex arrays.
+ * For arrays that aren't enabled, we set the input[attrib] pointer
+ * to point at a zero-stride current value "array".
+ */
+static void
+recalculate_input_bindings(struct gl_context *ctx)
+{
+ struct vbo_context *vbo = vbo_context(ctx);
+ struct vbo_exec_context *exec = &vbo->exec;
+ const struct gl_client_array **inputs = &exec->array.inputs[0];
+ GLbitfield const_inputs = 0x0;
+ GLuint i;
+
+ exec->array.program_mode = get_program_mode(ctx);
+ exec->array.enabled_flags = ctx->Array.ArrayObj->_Enabled;
+
+ switch (exec->array.program_mode) {
+ case VP_NONE:
+ /* When no vertex program is active (or the vertex program is generated
+ * from fixed-function state). We put the material values into the
+ * generic slots. This is the only situation where material values
+ * are available as per-vertex attributes.
+ */
+ for (i = 0; i <= VERT_ATTRIB_TEX7; i++) {
+ if (exec->array.legacy_array[i]->Enabled)
+ inputs[i] = exec->array.legacy_array[i];
+ else {
+ inputs[i] = &vbo->legacy_currval[i];
+ const_inputs |= 1 << i;
+ }
+ }
+
+ for (i = 0; i < MAT_ATTRIB_MAX; i++) {
+ inputs[VERT_ATTRIB_GENERIC0 + i] = &vbo->mat_currval[i];
+ const_inputs |= 1 << (VERT_ATTRIB_GENERIC0 + i);
+ }
+
+ /* Could use just about anything, just to fill in the empty
+ * slots:
+ */
+ for (i = MAT_ATTRIB_MAX; i < VERT_ATTRIB_MAX - VERT_ATTRIB_GENERIC0; i++) {
+ inputs[VERT_ATTRIB_GENERIC0 + i] = &vbo->generic_currval[i];
+ const_inputs |= 1 << (VERT_ATTRIB_GENERIC0 + i);
+ }
+
+ /* There is no need to make _NEW_ARRAY dirty here for the TnL program,
+ * because it already takes care of invalidating the state necessary
+ * to revalidate vertex arrays. Not marking the state as dirty also
+ * improves performance (quite significantly in some apps).
+ */
+ if (!ctx->VertexProgram._MaintainTnlProgram)
+ ctx->NewState |= _NEW_ARRAY;
+ break;
+
+ case VP_NV:
+ /* NV_vertex_program - attribute arrays alias and override
+ * conventional, legacy arrays. No materials, and the generic
+ * slots are vacant.
+ */
+ for (i = 0; i <= VERT_ATTRIB_TEX7; i++) {
+ if (exec->array.generic_array[i]->Enabled)
+ inputs[i] = exec->array.generic_array[i];
+ else if (exec->array.legacy_array[i]->Enabled)
+ inputs[i] = exec->array.legacy_array[i];
+ else {
+ inputs[i] = &vbo->legacy_currval[i];
+ const_inputs |= 1 << i;
+ }
+ }
+
+ /* Could use just about anything, just to fill in the empty
+ * slots:
+ */
+ for (i = VERT_ATTRIB_GENERIC0; i < VERT_ATTRIB_MAX; i++) {
+ inputs[i] = &vbo->generic_currval[i - VERT_ATTRIB_GENERIC0];
+ const_inputs |= 1 << i;
+ }
+
+ ctx->NewState |= _NEW_ARRAY;
+ break;
+
+ case VP_ARB:
+ /* GL_ARB_vertex_program or GLSL vertex shader - Only the generic[0]
+ * attribute array aliases and overrides the legacy position array.
+ *
+ * Otherwise, legacy attributes available in the legacy slots,
+ * generic attributes in the generic slots and materials are not
+ * available as per-vertex attributes.
+ */
+ if (exec->array.generic_array[0]->Enabled)
+ inputs[0] = exec->array.generic_array[0];
+ else if (exec->array.legacy_array[0]->Enabled)
+ inputs[0] = exec->array.legacy_array[0];
+ else {
+ inputs[0] = &vbo->legacy_currval[0];
+ const_inputs |= 1 << 0;
+ }
+
+ for (i = 1; i <= VERT_ATTRIB_TEX7; i++) {
+ if (exec->array.legacy_array[i]->Enabled)
+ inputs[i] = exec->array.legacy_array[i];
+ else {
+ inputs[i] = &vbo->legacy_currval[i];
+ const_inputs |= 1 << i;
+ }
+ }
+
+ for (i = 0; i < MAX_VERTEX_GENERIC_ATTRIBS; i++) {
+ if (exec->array.generic_array[i]->Enabled)
+ inputs[VERT_ATTRIB_GENERIC0 + i] = exec->array.generic_array[i];
+ else {
+ inputs[VERT_ATTRIB_GENERIC0 + i] = &vbo->generic_currval[i];
+ const_inputs |= 1 << (VERT_ATTRIB_GENERIC0 + i);
+ }
+ }
+
+ ctx->NewState |= _NEW_ARRAY;
+ break;
+ }
+
+ _mesa_set_varying_vp_inputs( ctx, ~const_inputs );
+}
+
+
+/**
+ * Examine the enabled vertex arrays to set the exec->array.inputs[] values.
+ * These will point to the arrays to actually use for drawing. Some will
+ * be user-provided arrays, other will be zero-stride const-valued arrays.
+ * Note that this might set the _NEW_ARRAY dirty flag so state validation
+ * must be done after this call.
+ */
+static void
+bind_arrays(struct gl_context *ctx)
+{
+ if (!ctx->Array.RebindArrays) {
+ return;
+ }
+
+ bind_array_obj(ctx);
+ recalculate_input_bindings(ctx);
+ ctx->Array.RebindArrays = GL_FALSE;
+}
+
+
+/**
+ * Helper function called by the other DrawArrays() functions below.
+ * This is where we handle primitive restart for drawing non-indexed
+ * arrays. If primitive restart is enabled, it typically means
+ * splitting one DrawArrays() into two.
+ */
+static void
+vbo_draw_arrays(struct gl_context *ctx, GLenum mode, GLint start,
+ GLsizei count, GLuint numInstances)
+{
+ struct vbo_context *vbo = vbo_context(ctx);
+ struct vbo_exec_context *exec = &vbo->exec;
+ struct _mesa_prim prim[2];
+
+ bind_arrays(ctx);
+
+ /* Again... because we may have changed the bitmask of per-vertex varying
+ * attributes. If we regenerate the fixed-function vertex program now
+ * we may be able to prune down the number of vertex attributes which we
+ * need in the shader.
+ */
+ if (ctx->NewState)
+ _mesa_update_state(ctx);
+
+ prim[0].begin = 1;
+ prim[0].end = 1;
+ prim[0].weak = 0;
+ prim[0].pad = 0;
+ prim[0].mode = mode;
+ prim[0].start = 0; /* filled in below */
+ prim[0].count = 0; /* filled in below */
+ prim[0].indexed = 0;
+ prim[0].basevertex = 0;
+ prim[0].num_instances = numInstances;
+
+ /* Implement the primitive restart index */
+ if (ctx->Array.PrimitiveRestart && ctx->Array.RestartIndex < count) {
+ GLuint primCount = 0;
+
+ if (ctx->Array.RestartIndex == start) {
+ /* special case: RestartIndex at beginning */
+ if (count > 1) {
+ prim[0].start = start + 1;
+ prim[0].count = count - 1;
+ primCount = 1;
+ }
+ }
+ else if (ctx->Array.RestartIndex == start + count - 1) {
+ /* special case: RestartIndex at end */
+ if (count > 1) {
+ prim[0].start = start;
+ prim[0].count = count - 1;
+ primCount = 1;
+ }
+ }
+ else {
+ /* general case: RestartIndex in middle, split into two prims */
+ prim[0].start = start;
+ prim[0].count = ctx->Array.RestartIndex - start;
+
+ prim[1] = prim[0];
+ prim[1].start = ctx->Array.RestartIndex + 1;
+ prim[1].count = count - prim[1].start;
+
+ primCount = 2;
+ }
+
+ if (primCount > 0) {
+ /* draw one or two prims */
+ check_buffers_are_unmapped(exec->array.inputs);
+ vbo->draw_prims(ctx, exec->array.inputs, prim, primCount, NULL,
+ GL_TRUE, start, start + count - 1);
+ }
+ }
+ else {
+ /* no prim restart */
+ prim[0].start = start;
+ prim[0].count = count;
+
+ check_buffers_are_unmapped(exec->array.inputs);
+ vbo->draw_prims(ctx, exec->array.inputs, prim, 1, NULL,
+ GL_TRUE, start, start + count - 1);
+ }
+}
+
+
+
+/**
+ * Called from glDrawArrays when in immediate mode (not display list mode).
+ */
+static void GLAPIENTRY
+vbo_exec_DrawArrays(GLenum mode, GLint start, GLsizei count)
+{
+ GET_CURRENT_CONTEXT(ctx);
+
+ if (MESA_VERBOSE & VERBOSE_DRAW)
+ _mesa_debug(ctx, "glDrawArrays(%s, %d, %d)\n",
+ _mesa_lookup_enum_by_nr(mode), start, count);
+
+ if (!_mesa_validate_DrawArrays( ctx, mode, start, count ))
+ return;
+
+ FLUSH_CURRENT( ctx, 0 );
+
+ if (!_mesa_valid_to_render(ctx, "glDrawArrays")) {
+ return;
+ }
+
+ if (0)
+ check_draw_arrays_data(ctx, start, count);
+
+ vbo_draw_arrays(ctx, mode, start, count, 1);
+
+ if (0)
+ print_draw_arrays(ctx, mode, start, count);
+}
+
+
+/**
+ * Called from glDrawArraysInstanced when in immediate mode (not
+ * display list mode).
+ */
+static void GLAPIENTRY
+vbo_exec_DrawArraysInstanced(GLenum mode, GLint start, GLsizei count,
+ GLsizei numInstances)
+{
+ GET_CURRENT_CONTEXT(ctx);
+
+ if (MESA_VERBOSE & VERBOSE_DRAW)
+ _mesa_debug(ctx, "glDrawArraysInstanced(%s, %d, %d, %d)\n",
+ _mesa_lookup_enum_by_nr(mode), start, count, numInstances);
+
+ if (!_mesa_validate_DrawArraysInstanced(ctx, mode, start, count, numInstances))
+ return;
+
+ FLUSH_CURRENT( ctx, 0 );
+
+ if (!_mesa_valid_to_render(ctx, "glDrawArraysInstanced")) {
+ return;
+ }
+
+ if (0)
+ check_draw_arrays_data(ctx, start, count);
+
+ vbo_draw_arrays(ctx, mode, start, count, numInstances);
+
+ if (0)
+ print_draw_arrays(ctx, mode, start, count);
+}
+
+
+/**
+ * Map GL_ELEMENT_ARRAY_BUFFER and print contents.
+ * For debugging.
+ */
+static void
+dump_element_buffer(struct gl_context *ctx, GLenum type)
+{
+ const GLvoid *map = ctx->Driver.MapBuffer(ctx,
+ GL_ELEMENT_ARRAY_BUFFER_ARB,
+ GL_READ_ONLY,
+ ctx->Array.ElementArrayBufferObj);
+ switch (type) {
+ case GL_UNSIGNED_BYTE:
+ {
+ const GLubyte *us = (const GLubyte *) map;
+ GLint i;
+ for (i = 0; i < ctx->Array.ElementArrayBufferObj->Size; i++) {
+ printf("%02x ", us[i]);
+ if (i % 32 == 31)
+ printf("\n");
+ }
+ printf("\n");
+ }
+ break;
+ case GL_UNSIGNED_SHORT:
+ {
+ const GLushort *us = (const GLushort *) map;
+ GLint i;
+ for (i = 0; i < ctx->Array.ElementArrayBufferObj->Size / 2; i++) {
+ printf("%04x ", us[i]);
+ if (i % 16 == 15)
+ printf("\n");
+ }
+ printf("\n");
+ }
+ break;
+ case GL_UNSIGNED_INT:
+ {
+ const GLuint *us = (const GLuint *) map;
+ GLint i;
+ for (i = 0; i < ctx->Array.ElementArrayBufferObj->Size / 4; i++) {
+ printf("%08x ", us[i]);
+ if (i % 8 == 7)
+ printf("\n");
+ }
+ printf("\n");
+ }
+ break;
+ default:
+ ;
+ }
+
+ ctx->Driver.UnmapBuffer(ctx, GL_ELEMENT_ARRAY_BUFFER_ARB,
+ ctx->Array.ElementArrayBufferObj);
+}
+
+
+/**
+ * Inner support for both _mesa_DrawElements and _mesa_DrawRangeElements.
+ * Do the rendering for a glDrawElements or glDrawRangeElements call after
+ * we've validated buffer bounds, etc.
+ */
+static void
+vbo_validated_drawrangeelements(struct gl_context *ctx, GLenum mode,
+ GLboolean index_bounds_valid,
+ GLuint start, GLuint end,
+ GLsizei count, GLenum type,
+ const GLvoid *indices,
+ GLint basevertex, GLint numInstances)
+{
+ struct vbo_context *vbo = vbo_context(ctx);
+ struct vbo_exec_context *exec = &vbo->exec;
+ struct _mesa_index_buffer ib;
+ struct _mesa_prim prim[1];
+
+ FLUSH_CURRENT( ctx, 0 );
+
+ if (!_mesa_valid_to_render(ctx, "glDraw[Range]Elements")) {
+ return;
+ }
+
+ bind_arrays( ctx );
+
+ /* check for dirty state again */
+ if (ctx->NewState)
+ _mesa_update_state( ctx );
+
+ ib.count = count;
+ ib.type = type;
+ ib.obj = ctx->Array.ElementArrayBufferObj;
+ ib.ptr = indices;
+
+ prim[0].begin = 1;
+ prim[0].end = 1;
+ prim[0].weak = 0;
+ prim[0].pad = 0;
+ prim[0].mode = mode;
+ prim[0].start = 0;
+ prim[0].count = count;
+ prim[0].indexed = 1;
+ prim[0].basevertex = basevertex;
+ prim[0].num_instances = numInstances;
+
+ /* Need to give special consideration to rendering a range of
+ * indices starting somewhere above zero. Typically the
+ * application is issuing multiple DrawRangeElements() to draw
+ * successive primitives layed out linearly in the vertex arrays.
+ * Unless the vertex arrays are all in a VBO (or locked as with
+ * CVA), the OpenGL semantics imply that we need to re-read or
+ * re-upload the vertex data on each draw call.
+ *
+ * In the case of hardware tnl, we want to avoid starting the
+ * upload at zero, as it will mean every draw call uploads an
+ * increasing amount of not-used vertex data. Worse - in the
+ * software tnl module, all those vertices might be transformed and
+ * lit but never rendered.
+ *
+ * If we just upload or transform the vertices in start..end,
+ * however, the indices will be incorrect.
+ *
+ * At this level, we don't know exactly what the requirements of
+ * the backend are going to be, though it will likely boil down to
+ * either:
+ *
+ * 1) Do nothing, everything is in a VBO and is processed once
+ * only.
+ *
+ * 2) Adjust the indices and vertex arrays so that start becomes
+ * zero.
+ *
+ * Rather than doing anything here, I'll provide a helper function
+ * for the latter case elsewhere.
+ */
+
+ check_buffers_are_unmapped(exec->array.inputs);
+ vbo->draw_prims( ctx, exec->array.inputs, prim, 1, &ib,
+ index_bounds_valid, start, end );
+}
+
+
+/**
+ * Called by glDrawRangeElementsBaseVertex() in immediate mode.
+ */
+static void GLAPIENTRY
+vbo_exec_DrawRangeElementsBaseVertex(GLenum mode,
+ GLuint start, GLuint end,
+ GLsizei count, GLenum type,
+ const GLvoid *indices,
+ GLint basevertex)
+{
+ static GLuint warnCount = 0;
+ GET_CURRENT_CONTEXT(ctx);
+
+ if (MESA_VERBOSE & VERBOSE_DRAW)
+ _mesa_debug(ctx,
+ "glDrawRangeElementsBaseVertex(%s, %u, %u, %d, %s, %p, %d)\n",
+ _mesa_lookup_enum_by_nr(mode), start, end, count,
+ _mesa_lookup_enum_by_nr(type), indices, basevertex);
+
+ if (!_mesa_validate_DrawRangeElements( ctx, mode, start, end, count,
+ type, indices, basevertex ))
+ return;
+
+ /* NOTE: It's important that 'end' is a reasonable value.
+ * in _tnl_draw_prims(), we use end to determine how many vertices
+ * to transform. If it's too large, we can unnecessarily split prims
+ * or we can read/write out of memory in several different places!
+ */
+
+ /* Catch/fix some potential user errors */
+ if (type == GL_UNSIGNED_BYTE) {
+ start = MIN2(start, 0xff);
+ end = MIN2(end, 0xff);
+ }
+ else if (type == GL_UNSIGNED_SHORT) {
+ start = MIN2(start, 0xffff);
+ end = MIN2(end, 0xffff);
+ }
+
+ if (end >= ctx->Array.ArrayObj->_MaxElement) {
+ /* the max element is out of bounds of one or more enabled arrays */
+ warnCount++;
+
+ if (warnCount < 10) {
+ _mesa_warning(ctx, "glDraw[Range]Elements(start %u, end %u, count %d, "
+ "type 0x%x, indices=%p)\n"
+ "\tend is out of bounds (max=%u) "
+ "Element Buffer %u (size %d)\n"
+ "\tThis should probably be fixed in the application.",
+ start, end, count, type, indices,
+ ctx->Array.ArrayObj->_MaxElement - 1,
+ ctx->Array.ElementArrayBufferObj->Name,
+ (int) ctx->Array.ElementArrayBufferObj->Size);
+ }
+
+ if (0)
+ dump_element_buffer(ctx, type);
+
+ if (0)
+ _mesa_print_arrays(ctx);
+
+#ifdef DEBUG
+ /* 'end' was out of bounds, but now let's check the actual array
+ * indexes to see if any of them are out of bounds.
+ */
+ {
+ GLuint max = _mesa_max_buffer_index(ctx, count, type, indices,
+ ctx->Array.ElementArrayBufferObj);
+ if (max >= ctx->Array.ArrayObj->_MaxElement) {
+ if (warnCount < 10) {
+ _mesa_warning(ctx, "glDraw[Range]Elements(start %u, end %u, "
+ "count %d, type 0x%x, indices=%p)\n"
+ "\tindex=%u is out of bounds (max=%u) "
+ "Element Buffer %u (size %d)\n"
+ "\tSkipping the glDrawRangeElements() call",
+ start, end, count, type, indices, max,
+ ctx->Array.ArrayObj->_MaxElement - 1,
+ ctx->Array.ElementArrayBufferObj->Name,
+ (int) ctx->Array.ElementArrayBufferObj->Size);
+ }
+ }
+ /* XXX we could also find the min index and compare to 'start'
+ * to see if start is correct. But it's more likely to get the
+ * upper bound wrong.
+ */
+ }
+#endif
+
+ /* Set 'end' to the max possible legal value */
+ assert(ctx->Array.ArrayObj->_MaxElement >= 1);
+ end = ctx->Array.ArrayObj->_MaxElement - 1;
+
+ if (end < start) {
+ return;
+ }
+ }
+
+ if (0) {
+ printf("glDraw[Range]Elements{,BaseVertex}"
+ "(start %u, end %u, type 0x%x, count %d) ElemBuf %u, "
+ "base %d\n",
+ start, end, type, count,
+ ctx->Array.ElementArrayBufferObj->Name,
+ basevertex);
+ }
+
+#if 0
+ check_draw_elements_data(ctx, count, type, indices);
+#else
+ (void) check_draw_elements_data;
+#endif
+
+ vbo_validated_drawrangeelements(ctx, mode, GL_TRUE, start, end,
+ count, type, indices, basevertex, 1);
+}
+
+
+/**
+ * Called by glDrawRangeElements() in immediate mode.
+ */
+static void GLAPIENTRY
+vbo_exec_DrawRangeElements(GLenum mode, GLuint start, GLuint end,
+ GLsizei count, GLenum type, const GLvoid *indices)
+{
+ GET_CURRENT_CONTEXT(ctx);
+
+ if (MESA_VERBOSE & VERBOSE_DRAW)
+ _mesa_debug(ctx,
+ "glDrawRangeElements(%s, %u, %u, %d, %s, %p)\n",
+ _mesa_lookup_enum_by_nr(mode), start, end, count,
+ _mesa_lookup_enum_by_nr(type), indices);
+
+ vbo_exec_DrawRangeElementsBaseVertex(mode, start, end, count, type,
+ indices, 0);
+}
+
+
+/**
+ * Called by glDrawElements() in immediate mode.
+ */
+static void GLAPIENTRY
+vbo_exec_DrawElements(GLenum mode, GLsizei count, GLenum type,
+ const GLvoid *indices)
+{
+ GET_CURRENT_CONTEXT(ctx);
+
+ if (MESA_VERBOSE & VERBOSE_DRAW)
+ _mesa_debug(ctx, "glDrawElements(%s, %u, %s, %p)\n",
+ _mesa_lookup_enum_by_nr(mode), count,
+ _mesa_lookup_enum_by_nr(type), indices);
+
+ if (!_mesa_validate_DrawElements( ctx, mode, count, type, indices, 0 ))
+ return;
+
+ vbo_validated_drawrangeelements(ctx, mode, GL_FALSE, ~0, ~0,
+ count, type, indices, 0, 1);
+}
+
+
+/**
+ * Called by glDrawElementsBaseVertex() in immediate mode.
+ */
+static void GLAPIENTRY
+vbo_exec_DrawElementsBaseVertex(GLenum mode, GLsizei count, GLenum type,
+ const GLvoid *indices, GLint basevertex)
+{
+ GET_CURRENT_CONTEXT(ctx);
+
+ if (MESA_VERBOSE & VERBOSE_DRAW)
+ _mesa_debug(ctx, "glDrawElementsBaseVertex(%s, %d, %s, %p, %d)\n",
+ _mesa_lookup_enum_by_nr(mode), count,
+ _mesa_lookup_enum_by_nr(type), indices, basevertex);
+
+ if (!_mesa_validate_DrawElements( ctx, mode, count, type, indices,
+ basevertex ))
+ return;
+
+ vbo_validated_drawrangeelements(ctx, mode, GL_FALSE, ~0, ~0,
+ count, type, indices, basevertex, 1);
+}
+
+
+/**
+ * Called by glDrawElementsInstanced() in immediate mode.
+ */
+static void GLAPIENTRY
+vbo_exec_DrawElementsInstanced(GLenum mode, GLsizei count, GLenum type,
+ const GLvoid *indices, GLsizei numInstances)
+{
+ GET_CURRENT_CONTEXT(ctx);
+
+ if (MESA_VERBOSE & VERBOSE_DRAW)
+ _mesa_debug(ctx, "glDrawElementsInstanced(%s, %d, %s, %p, %d)\n",
+ _mesa_lookup_enum_by_nr(mode), count,
+ _mesa_lookup_enum_by_nr(type), indices, numInstances);
+
+ if (!_mesa_validate_DrawElementsInstanced(ctx, mode, count, type, indices,
+ numInstances))
+ return;
+
+ vbo_validated_drawrangeelements(ctx, mode, GL_FALSE, ~0, ~0,
+ count, type, indices, 0, numInstances);
+}
+
+
+/**
+ * Inner support for both _mesa_MultiDrawElements() and
+ * _mesa_MultiDrawRangeElements().
+ * This does the actual rendering after we've checked array indexes, etc.
+ */
+static void
+vbo_validated_multidrawelements(struct gl_context *ctx, GLenum mode,
+ const GLsizei *count, GLenum type,
+ const GLvoid **indices, GLsizei primcount,
+ const GLint *basevertex)
+{
+ struct vbo_context *vbo = vbo_context(ctx);
+ struct vbo_exec_context *exec = &vbo->exec;
+ struct _mesa_index_buffer ib;
+ struct _mesa_prim *prim;
+ unsigned int index_type_size = 0;
+ uintptr_t min_index_ptr, max_index_ptr;
+ GLboolean fallback = GL_FALSE;
+ int i;
+
+ if (primcount == 0)
+ return;
+
+ FLUSH_CURRENT( ctx, 0 );
+
+ if (!_mesa_valid_to_render(ctx, "glMultiDrawElements")) {
+ return;
+ }
+
+ prim = calloc(1, primcount * sizeof(*prim));
+ if (prim == NULL) {
+ _mesa_error(ctx, GL_OUT_OF_MEMORY, "glMultiDrawElements");
+ return;
+ }
+
+ /* Decide if we can do this all as one set of primitives sharing the
+ * same index buffer, or if we have to reset the index pointer per
+ * primitive.
+ */
+ bind_arrays( ctx );
+
+ /* check for dirty state again */
+ if (ctx->NewState)
+ _mesa_update_state( ctx );
+
+ switch (type) {
+ case GL_UNSIGNED_INT:
+ index_type_size = 4;
+ break;
+ case GL_UNSIGNED_SHORT:
+ index_type_size = 2;
+ break;
+ case GL_UNSIGNED_BYTE:
+ index_type_size = 1;
+ break;
+ default:
+ assert(0);
+ }
+
+ min_index_ptr = (uintptr_t)indices[0];
+ max_index_ptr = 0;
+ for (i = 0; i < primcount; i++) {
+ min_index_ptr = MIN2(min_index_ptr, (uintptr_t)indices[i]);
+ max_index_ptr = MAX2(max_index_ptr, (uintptr_t)indices[i] +
+ index_type_size * count[i]);
+ }
+
+ /* Check if we can handle this thing as a bunch of index offsets from the
+ * same index pointer. If we can't, then we have to fall back to doing
+ * a draw_prims per primitive.
+ * Check that the difference between each prim's indexes is a multiple of
+ * the index/element size.
+ */
+ if (index_type_size != 1) {
+ for (i = 0; i < primcount; i++) {
+ if ((((uintptr_t)indices[i] - min_index_ptr) % index_type_size) != 0) {
+ fallback = GL_TRUE;
+ break;
+ }
+ }
+ }
+
+ /* If the index buffer isn't in a VBO, then treating the application's
+ * subranges of the index buffer as one large index buffer may lead to
+ * us reading unmapped memory.
+ */
+ if (!_mesa_is_bufferobj(ctx->Array.ElementArrayBufferObj))
+ fallback = GL_TRUE;
+
+ if (!fallback) {
+ ib.count = (max_index_ptr - min_index_ptr) / index_type_size;
+ ib.type = type;
+ ib.obj = ctx->Array.ElementArrayBufferObj;
+ ib.ptr = (void *)min_index_ptr;
+
+ for (i = 0; i < primcount; i++) {
+ prim[i].begin = (i == 0);
+ prim[i].end = (i == primcount - 1);
+ prim[i].weak = 0;
+ prim[i].pad = 0;
+ prim[i].mode = mode;
+ prim[i].start = ((uintptr_t)indices[i] - min_index_ptr) / index_type_size;
+ prim[i].count = count[i];
+ prim[i].indexed = 1;
+ prim[i].num_instances = 1;
+ if (basevertex != NULL)
+ prim[i].basevertex = basevertex[i];
+ else
+ prim[i].basevertex = 0;
+ }
+
+ check_buffers_are_unmapped(exec->array.inputs);
+ vbo->draw_prims(ctx, exec->array.inputs, prim, primcount, &ib,
+ GL_FALSE, ~0, ~0);
+ } else {
+ /* render one prim at a time */
+ for (i = 0; i < primcount; i++) {
+ ib.count = count[i];
+ ib.type = type;
+ ib.obj = ctx->Array.ElementArrayBufferObj;
+ ib.ptr = indices[i];
+
+ prim[0].begin = 1;
+ prim[0].end = 1;
+ prim[0].weak = 0;
+ prim[0].pad = 0;
+ prim[0].mode = mode;
+ prim[0].start = 0;
+ prim[0].count = count[i];
+ prim[0].indexed = 1;
+ prim[0].num_instances = 1;
+ if (basevertex != NULL)
+ prim[0].basevertex = basevertex[i];
+ else
+ prim[0].basevertex = 0;
+
+ check_buffers_are_unmapped(exec->array.inputs);
+ vbo->draw_prims(ctx, exec->array.inputs, prim, 1, &ib,
+ GL_FALSE, ~0, ~0);
+ }
+ }
+
+ free(prim);
+}
+
+
+static void GLAPIENTRY
+vbo_exec_MultiDrawElements(GLenum mode,
+ const GLsizei *count, GLenum type,
+ const GLvoid **indices,
+ GLsizei primcount)
+{
+ GET_CURRENT_CONTEXT(ctx);
+ GLint i;
+
+ ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
+
+ for (i = 0; i < primcount; i++) {
+ if (!_mesa_validate_DrawElements(ctx, mode, count[i], type, indices[i],
+ 0))
+ return;
+ }
+
+ vbo_validated_multidrawelements(ctx, mode, count, type, indices, primcount,
+ NULL);
+}
+
+
+static void GLAPIENTRY
+vbo_exec_MultiDrawElementsBaseVertex(GLenum mode,
+ const GLsizei *count, GLenum type,
+ const GLvoid **indices,
+ GLsizei primcount,
+ const GLsizei *basevertex)
+{
+ GET_CURRENT_CONTEXT(ctx);
+ GLint i;
+
+ ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
+
+ for (i = 0; i < primcount; i++) {
+ if (!_mesa_validate_DrawElements(ctx, mode, count[i], type, indices[i],
+ basevertex[i]))
+ return;
+ }
+
+ vbo_validated_multidrawelements(ctx, mode, count, type, indices, primcount,
+ basevertex);
+}
+
+
+/**
+ * Plug in the immediate-mode vertex array drawing commands into the
+ * givven vbo_exec_context object.
+ */
+void
+vbo_exec_array_init( struct vbo_exec_context *exec )
+{
+ exec->vtxfmt.DrawArrays = vbo_exec_DrawArrays;
+ exec->vtxfmt.DrawElements = vbo_exec_DrawElements;
+ exec->vtxfmt.DrawRangeElements = vbo_exec_DrawRangeElements;
+ exec->vtxfmt.MultiDrawElementsEXT = vbo_exec_MultiDrawElements;
+ exec->vtxfmt.DrawElementsBaseVertex = vbo_exec_DrawElementsBaseVertex;
+ exec->vtxfmt.DrawRangeElementsBaseVertex = vbo_exec_DrawRangeElementsBaseVertex;
+ exec->vtxfmt.MultiDrawElementsBaseVertex = vbo_exec_MultiDrawElementsBaseVertex;
+ exec->vtxfmt.DrawArraysInstanced = vbo_exec_DrawArraysInstanced;
+ exec->vtxfmt.DrawElementsInstanced = vbo_exec_DrawElementsInstanced;
+}
+
+
+void
+vbo_exec_array_destroy( struct vbo_exec_context *exec )
+{
+ /* nothing to do */
+}
+
+
+
+/**
+ * The following functions are only used for OpenGL ES 1/2 support.
+ * And some aren't even supported (yet) in ES 1/2.
+ */
+
+
+void GLAPIENTRY
+_mesa_DrawArrays(GLenum mode, GLint first, GLsizei count)
+{
+ vbo_exec_DrawArrays(mode, first, count);
+}
+
+
+void GLAPIENTRY
+_mesa_DrawElements(GLenum mode, GLsizei count, GLenum type,
+ const GLvoid *indices)
+{
+ vbo_exec_DrawElements(mode, count, type, indices);
+}
+
+
+void GLAPIENTRY
+_mesa_DrawElementsBaseVertex(GLenum mode, GLsizei count, GLenum type,
+ const GLvoid *indices, GLint basevertex)
+{
+ vbo_exec_DrawElementsBaseVertex(mode, count, type, indices, basevertex);
+}
+
+
+void GLAPIENTRY
+_mesa_DrawRangeElements(GLenum mode, GLuint start, GLuint end, GLsizei count,
+ GLenum type, const GLvoid *indices)
+{
+ vbo_exec_DrawRangeElements(mode, start, end, count, type, indices);
+}
+
+
+void GLAPIENTRY
+_mesa_DrawRangeElementsBaseVertex(GLenum mode, GLuint start, GLuint end,
+ GLsizei count, GLenum type,
+ const GLvoid *indices, GLint basevertex)
+{
+ vbo_exec_DrawRangeElementsBaseVertex(mode, start, end, count, type,
+ indices, basevertex);
+}
+
+
+void GLAPIENTRY
+_mesa_MultiDrawElementsEXT(GLenum mode, const GLsizei *count, GLenum type,
+ const GLvoid **indices, GLsizei primcount)
+{
+ vbo_exec_MultiDrawElements(mode, count, type, indices, primcount);
+}
+
+
+void GLAPIENTRY
+_mesa_MultiDrawElementsBaseVertex(GLenum mode,
+ const GLsizei *count, GLenum type,
+ const GLvoid **indices, GLsizei primcount,
+ const GLint *basevertex)
+{
+ vbo_exec_MultiDrawElementsBaseVertex(mode, count, type, indices,
+ primcount, basevertex);
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-23 23:50:13 +0000