diff options
Diffstat (limited to 'mesalib/src/mesa/vbo/vbo_exec_draw.c')
| -rw-r--r-- | mesalib/src/mesa/vbo/vbo_exec_draw.c | 843 |
1 files changed, 416 insertions, 427 deletions
diff --git a/mesalib/src/mesa/vbo/vbo_exec_draw.c b/mesalib/src/mesa/vbo/vbo_exec_draw.c index 98f585792..8ffaaaa48 100644 --- a/mesalib/src/mesa/vbo/vbo_exec_draw.c +++ b/mesalib/src/mesa/vbo/vbo_exec_draw.c @@ -1,427 +1,416 @@ -/*
- * Mesa 3-D graphics library
- * Version: 7.2
- *
- * Copyright (C) 1999-2008 Brian Paul 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, sublicense,
- * 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 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 NONINFRINGEMENT. IN NO EVENT SHALL
- * BRIAN PAUL 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.
- *
- * Authors:
- * Keith Whitwell <keith@tungstengraphics.com>
- */
-
-#include "main/glheader.h"
-#include "main/bufferobj.h"
-#include "main/compiler.h"
-#include "main/enums.h"
-#include "main/mfeatures.h"
-#include "main/state.h"
-
-#include "vbo_context.h"
-
-
-#if FEATURE_beginend
-
-
-static void
-vbo_exec_debug_verts( struct vbo_exec_context *exec )
-{
- GLuint count = exec->vtx.vert_count;
- GLuint i;
-
- printf("%s: %u vertices %d primitives, %d vertsize\n",
- __FUNCTION__,
- count,
- exec->vtx.prim_count,
- exec->vtx.vertex_size);
-
- for (i = 0 ; i < exec->vtx.prim_count ; i++) {
- struct _mesa_prim *prim = &exec->vtx.prim[i];
- printf(" prim %d: %s%s %d..%d %s %s\n",
- i,
- _mesa_lookup_prim_by_nr(prim->mode),
- prim->weak ? " (weak)" : "",
- prim->start,
- prim->start + prim->count,
- prim->begin ? "BEGIN" : "(wrap)",
- prim->end ? "END" : "(wrap)");
- }
-}
-
-
-/*
- * NOTE: Need to have calculated primitives by this point -- do it on the fly.
- * NOTE: Old 'parity' issue is gone.
- */
-static GLuint
-vbo_copy_vertices( struct vbo_exec_context *exec )
-{
- GLuint nr = exec->vtx.prim[exec->vtx.prim_count-1].count;
- GLuint ovf, i;
- GLuint sz = exec->vtx.vertex_size;
- GLfloat *dst = exec->vtx.copied.buffer;
- const GLfloat *src = (exec->vtx.buffer_map +
- exec->vtx.prim[exec->vtx.prim_count-1].start *
- exec->vtx.vertex_size);
-
-
- switch (exec->ctx->Driver.CurrentExecPrimitive) {
- case GL_POINTS:
- return 0;
- case GL_LINES:
- ovf = nr&1;
- for (i = 0 ; i < ovf ; i++)
- memcpy( dst+i*sz, src+(nr-ovf+i)*sz, sz * sizeof(GLfloat) );
- return i;
- case GL_TRIANGLES:
- ovf = nr%3;
- for (i = 0 ; i < ovf ; i++)
- memcpy( dst+i*sz, src+(nr-ovf+i)*sz, sz * sizeof(GLfloat) );
- return i;
- case GL_QUADS:
- ovf = nr&3;
- for (i = 0 ; i < ovf ; i++)
- memcpy( dst+i*sz, src+(nr-ovf+i)*sz, sz * sizeof(GLfloat) );
- return i;
- case GL_LINE_STRIP:
- if (nr == 0) {
- return 0;
- }
- else {
- memcpy( dst, src+(nr-1)*sz, sz * sizeof(GLfloat) );
- return 1;
- }
- case GL_LINE_LOOP:
- case GL_TRIANGLE_FAN:
- case GL_POLYGON:
- if (nr == 0) {
- return 0;
- }
- else if (nr == 1) {
- memcpy( dst, src+0, sz * sizeof(GLfloat) );
- return 1;
- }
- else {
- memcpy( dst, src+0, sz * sizeof(GLfloat) );
- memcpy( dst+sz, src+(nr-1)*sz, sz * sizeof(GLfloat) );
- return 2;
- }
- case GL_TRIANGLE_STRIP:
- /* no parity issue, but need to make sure the tri is not drawn twice */
- if (nr & 1) {
- exec->vtx.prim[exec->vtx.prim_count-1].count--;
- }
- /* fallthrough */
- case GL_QUAD_STRIP:
- switch (nr) {
- case 0:
- ovf = 0;
- break;
- case 1:
- ovf = 1;
- break;
- default:
- ovf = 2 + (nr & 1);
- break;
- }
- for (i = 0 ; i < ovf ; i++)
- memcpy( dst+i*sz, src+(nr-ovf+i)*sz, sz * sizeof(GLfloat) );
- return i;
- case PRIM_OUTSIDE_BEGIN_END:
- return 0;
- default:
- assert(0);
- return 0;
- }
-}
-
-
-
-/* TODO: populate these as the vertex is defined:
- */
-static void
-vbo_exec_bind_arrays( struct gl_context *ctx )
-{
- struct vbo_context *vbo = vbo_context(ctx);
- struct vbo_exec_context *exec = &vbo->exec;
- struct gl_client_array *arrays = exec->vtx.arrays;
- const GLuint count = exec->vtx.vert_count;
- const GLuint *map;
- GLuint attr;
- GLbitfield varying_inputs = 0x0;
-
- /* Install the default (ie Current) attributes first, then overlay
- * all active ones.
- */
- switch (get_program_mode(exec->ctx)) {
- case VP_NONE:
- for (attr = 0; attr < 16; attr++) {
- exec->vtx.inputs[attr] = &vbo->legacy_currval[attr];
- }
- for (attr = 0; attr < MAT_ATTRIB_MAX; attr++) {
- ASSERT(attr + 16 < Elements(exec->vtx.inputs));
- exec->vtx.inputs[attr + 16] = &vbo->mat_currval[attr];
- }
- map = vbo->map_vp_none;
- break;
- case VP_NV:
- case VP_ARB:
- /* The aliasing of attributes for NV vertex programs has already
- * occurred. NV vertex programs cannot access material values,
- * nor attributes greater than VERT_ATTRIB_TEX7.
- */
- for (attr = 0; attr < 16; attr++) {
- exec->vtx.inputs[attr] = &vbo->legacy_currval[attr];
- ASSERT(attr + 16 < Elements(exec->vtx.inputs));
- exec->vtx.inputs[attr + 16] = &vbo->generic_currval[attr];
- }
- map = vbo->map_vp_arb;
-
- /* check if VERT_ATTRIB_POS is not read but VERT_BIT_GENERIC0 is read.
- * In that case we effectively need to route the data from
- * glVertexAttrib(0, val) calls to feed into the GENERIC0 input.
- */
- if ((ctx->VertexProgram._Current->Base.InputsRead & VERT_BIT_POS) == 0 &&
- (ctx->VertexProgram._Current->Base.InputsRead & VERT_BIT_GENERIC0)) {
- exec->vtx.inputs[16] = exec->vtx.inputs[0];
- exec->vtx.attrsz[16] = exec->vtx.attrsz[0];
- exec->vtx.attrptr[16] = exec->vtx.attrptr[0];
- exec->vtx.attrsz[0] = 0;
- }
- break;
- default:
- assert(0);
- }
-
- /* Make all active attributes (including edgeflag) available as
- * arrays of floats.
- */
- for (attr = 0; attr < VERT_ATTRIB_MAX ; attr++) {
- const GLuint src = map[attr];
-
- if (exec->vtx.attrsz[src]) {
- GLsizeiptr offset = (GLbyte *)exec->vtx.attrptr[src] -
- (GLbyte *)exec->vtx.vertex;
-
- /* override the default array set above */
- ASSERT(attr < Elements(exec->vtx.inputs));
- ASSERT(attr < Elements(exec->vtx.arrays)); /* arrays[] */
- exec->vtx.inputs[attr] = &arrays[attr];
-
- if (_mesa_is_bufferobj(exec->vtx.bufferobj)) {
- /* a real buffer obj: Ptr is an offset, not a pointer*/
- assert(exec->vtx.bufferobj->Pointer); /* buf should be mapped */
- assert(offset >= 0);
- arrays[attr].Ptr = (GLubyte *)exec->vtx.bufferobj->Offset + offset;
- }
- else {
- /* Ptr into ordinary app memory */
- arrays[attr].Ptr = (GLubyte *)exec->vtx.buffer_map + offset;
- }
- arrays[attr].Size = exec->vtx.attrsz[src];
- arrays[attr].StrideB = exec->vtx.vertex_size * sizeof(GLfloat);
- arrays[attr].Stride = exec->vtx.vertex_size * sizeof(GLfloat);
- arrays[attr].Type = GL_FLOAT;
- arrays[attr].Format = GL_RGBA;
- arrays[attr].Enabled = 1;
- arrays[attr]._ElementSize = arrays[attr].Size * sizeof(GLfloat);
- _mesa_reference_buffer_object(ctx,
- &arrays[attr].BufferObj,
- exec->vtx.bufferobj);
- arrays[attr]._MaxElement = count; /* ??? */
-
- varying_inputs |= 1 << attr;
- ctx->NewState |= _NEW_ARRAY;
- }
- }
-
- _mesa_set_varying_vp_inputs( ctx, varying_inputs );
-}
-
-
-/**
- * Unmap the VBO. This is called before drawing.
- */
-static void
-vbo_exec_vtx_unmap( struct vbo_exec_context *exec )
-{
- GLenum target = GL_ARRAY_BUFFER_ARB;
-
- if (_mesa_is_bufferobj(exec->vtx.bufferobj)) {
- struct gl_context *ctx = exec->ctx;
-
- if (ctx->Driver.FlushMappedBufferRange) {
- GLintptr offset = exec->vtx.buffer_used - exec->vtx.bufferobj->Offset;
- GLsizeiptr length = (exec->vtx.buffer_ptr - exec->vtx.buffer_map) * sizeof(float);
-
- if (length)
- ctx->Driver.FlushMappedBufferRange(ctx, target,
- offset, length,
- exec->vtx.bufferobj);
- }
-
- exec->vtx.buffer_used += (exec->vtx.buffer_ptr -
- exec->vtx.buffer_map) * sizeof(float);
-
- assert(exec->vtx.buffer_used <= VBO_VERT_BUFFER_SIZE);
- assert(exec->vtx.buffer_ptr != NULL);
-
- ctx->Driver.UnmapBuffer(ctx, target, exec->vtx.bufferobj);
- exec->vtx.buffer_map = NULL;
- exec->vtx.buffer_ptr = NULL;
- exec->vtx.max_vert = 0;
- }
-}
-
-
-/**
- * Map the vertex buffer to begin storing glVertex, glColor, etc data.
- */
-void
-vbo_exec_vtx_map( struct vbo_exec_context *exec )
-{
- struct gl_context *ctx = exec->ctx;
- const GLenum target = GL_ARRAY_BUFFER_ARB;
- const GLenum access = GL_READ_WRITE_ARB; /* for MapBuffer */
- const GLenum accessRange = GL_MAP_WRITE_BIT | /* for MapBufferRange */
- GL_MAP_INVALIDATE_RANGE_BIT |
- GL_MAP_UNSYNCHRONIZED_BIT |
- GL_MAP_FLUSH_EXPLICIT_BIT |
- MESA_MAP_NOWAIT_BIT;
- const GLenum usage = GL_STREAM_DRAW_ARB;
-
- if (!_mesa_is_bufferobj(exec->vtx.bufferobj))
- return;
-
- assert(!exec->vtx.buffer_map);
- assert(!exec->vtx.buffer_ptr);
-
- if (VBO_VERT_BUFFER_SIZE > exec->vtx.buffer_used + 1024 &&
- ctx->Driver.MapBufferRange) {
- /* The VBO exists and there's room for more */
- exec->vtx.buffer_map =
- (GLfloat *)ctx->Driver.MapBufferRange(ctx,
- target,
- exec->vtx.buffer_used,
- (VBO_VERT_BUFFER_SIZE -
- exec->vtx.buffer_used),
- accessRange,
- exec->vtx.bufferobj);
- exec->vtx.buffer_ptr = exec->vtx.buffer_map;
- }
-
- if (!exec->vtx.buffer_map) {
- /* Need to allocate a new VBO */
- exec->vtx.buffer_used = 0;
-
- ctx->Driver.BufferData(ctx, target,
- VBO_VERT_BUFFER_SIZE,
- NULL, usage, exec->vtx.bufferobj);
-
-
- if (ctx->Driver.MapBufferRange)
- exec->vtx.buffer_map =
- (GLfloat *)ctx->Driver.MapBufferRange(ctx, target,
- 0, VBO_VERT_BUFFER_SIZE,
- accessRange,
- exec->vtx.bufferobj);
- if (!exec->vtx.buffer_map)
- exec->vtx.buffer_map =
- (GLfloat *)ctx->Driver.MapBuffer(ctx, target, access, exec->vtx.bufferobj);
- assert(exec->vtx.buffer_map);
- exec->vtx.buffer_ptr = exec->vtx.buffer_map;
- }
-
- if (0)
- printf("map %d..\n", exec->vtx.buffer_used);
-}
-
-
-
-/**
- * Execute the buffer and save copied verts.
- * \param keep_unmapped if true, leave the VBO unmapped when we're done.
- */
-void
-vbo_exec_vtx_flush(struct vbo_exec_context *exec, GLboolean keepUnmapped)
-{
- if (0)
- vbo_exec_debug_verts( exec );
-
- if (exec->vtx.prim_count &&
- exec->vtx.vert_count) {
-
- exec->vtx.copied.nr = vbo_copy_vertices( exec );
-
- if (exec->vtx.copied.nr != exec->vtx.vert_count) {
- struct gl_context *ctx = exec->ctx;
-
- /* Before the update_state() as this may raise _NEW_ARRAY
- * from _mesa_set_varying_vp_inputs().
- */
- vbo_exec_bind_arrays( ctx );
-
- if (ctx->NewState)
- _mesa_update_state( ctx );
-
- if (_mesa_is_bufferobj(exec->vtx.bufferobj)) {
- vbo_exec_vtx_unmap( exec );
- }
-
- if (0)
- printf("%s %d %d\n", __FUNCTION__, exec->vtx.prim_count,
- exec->vtx.vert_count);
-
- vbo_context(ctx)->draw_prims( ctx,
- exec->vtx.inputs,
- exec->vtx.prim,
- exec->vtx.prim_count,
- NULL,
- GL_TRUE,
- 0,
- exec->vtx.vert_count - 1);
-
- /* If using a real VBO, get new storage -- unless asked not to.
- */
- if (_mesa_is_bufferobj(exec->vtx.bufferobj) && !keepUnmapped) {
- vbo_exec_vtx_map( exec );
- }
- }
- }
-
- /* May have to unmap explicitly if we didn't draw:
- */
- if (keepUnmapped &&
- _mesa_is_bufferobj(exec->vtx.bufferobj) &&
- exec->vtx.buffer_map) {
- vbo_exec_vtx_unmap( exec );
- }
-
- if (keepUnmapped || exec->vtx.vertex_size == 0)
- exec->vtx.max_vert = 0;
- else
- exec->vtx.max_vert = ((VBO_VERT_BUFFER_SIZE - exec->vtx.buffer_used) /
- (exec->vtx.vertex_size * sizeof(GLfloat)));
-
- exec->vtx.buffer_ptr = exec->vtx.buffer_map;
- exec->vtx.prim_count = 0;
- exec->vtx.vert_count = 0;
-}
-
-
-#endif /* FEATURE_beginend */
+/* + * Mesa 3-D graphics library + * Version: 7.2 + * + * Copyright (C) 1999-2008 Brian Paul 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, sublicense, + * 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 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 NONINFRINGEMENT. IN NO EVENT SHALL + * BRIAN PAUL 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. + * + * Authors: + * Keith Whitwell <keith@tungstengraphics.com> + */ + +#include "main/glheader.h" +#include "main/bufferobj.h" +#include "main/compiler.h" +#include "main/enums.h" +#include "main/mfeatures.h" +#include "main/state.h" + +#include "vbo_context.h" + + +#if FEATURE_beginend + + +static void +vbo_exec_debug_verts( struct vbo_exec_context *exec ) +{ + GLuint count = exec->vtx.vert_count; + GLuint i; + + printf("%s: %u vertices %d primitives, %d vertsize\n", + __FUNCTION__, + count, + exec->vtx.prim_count, + exec->vtx.vertex_size); + + for (i = 0 ; i < exec->vtx.prim_count ; i++) { + struct _mesa_prim *prim = &exec->vtx.prim[i]; + printf(" prim %d: %s%s %d..%d %s %s\n", + i, + _mesa_lookup_prim_by_nr(prim->mode), + prim->weak ? " (weak)" : "", + prim->start, + prim->start + prim->count, + prim->begin ? "BEGIN" : "(wrap)", + prim->end ? "END" : "(wrap)"); + } +} + + +/* + * NOTE: Need to have calculated primitives by this point -- do it on the fly. + * NOTE: Old 'parity' issue is gone. + */ +static GLuint +vbo_copy_vertices( struct vbo_exec_context *exec ) +{ + GLuint nr = exec->vtx.prim[exec->vtx.prim_count-1].count; + GLuint ovf, i; + GLuint sz = exec->vtx.vertex_size; + GLfloat *dst = exec->vtx.copied.buffer; + const GLfloat *src = (exec->vtx.buffer_map + + exec->vtx.prim[exec->vtx.prim_count-1].start * + exec->vtx.vertex_size); + + + switch (exec->ctx->Driver.CurrentExecPrimitive) { + case GL_POINTS: + return 0; + case GL_LINES: + ovf = nr&1; + for (i = 0 ; i < ovf ; i++) + memcpy( dst+i*sz, src+(nr-ovf+i)*sz, sz * sizeof(GLfloat) ); + return i; + case GL_TRIANGLES: + ovf = nr%3; + for (i = 0 ; i < ovf ; i++) + memcpy( dst+i*sz, src+(nr-ovf+i)*sz, sz * sizeof(GLfloat) ); + return i; + case GL_QUADS: + ovf = nr&3; + for (i = 0 ; i < ovf ; i++) + memcpy( dst+i*sz, src+(nr-ovf+i)*sz, sz * sizeof(GLfloat) ); + return i; + case GL_LINE_STRIP: + if (nr == 0) { + return 0; + } + else { + memcpy( dst, src+(nr-1)*sz, sz * sizeof(GLfloat) ); + return 1; + } + case GL_LINE_LOOP: + case GL_TRIANGLE_FAN: + case GL_POLYGON: + if (nr == 0) { + return 0; + } + else if (nr == 1) { + memcpy( dst, src+0, sz * sizeof(GLfloat) ); + return 1; + } + else { + memcpy( dst, src+0, sz * sizeof(GLfloat) ); + memcpy( dst+sz, src+(nr-1)*sz, sz * sizeof(GLfloat) ); + return 2; + } + case GL_TRIANGLE_STRIP: + /* no parity issue, but need to make sure the tri is not drawn twice */ + if (nr & 1) { + exec->vtx.prim[exec->vtx.prim_count-1].count--; + } + /* fallthrough */ + case GL_QUAD_STRIP: + switch (nr) { + case 0: + ovf = 0; + break; + case 1: + ovf = 1; + break; + default: + ovf = 2 + (nr & 1); + break; + } + for (i = 0 ; i < ovf ; i++) + memcpy( dst+i*sz, src+(nr-ovf+i)*sz, sz * sizeof(GLfloat) ); + return i; + case PRIM_OUTSIDE_BEGIN_END: + return 0; + default: + assert(0); + return 0; + } +} + + + +/* TODO: populate these as the vertex is defined: + */ +static void +vbo_exec_bind_arrays( struct gl_context *ctx ) +{ + struct vbo_context *vbo = vbo_context(ctx); + struct vbo_exec_context *exec = &vbo->exec; + struct gl_client_array *arrays = exec->vtx.arrays; + const GLuint count = exec->vtx.vert_count; + const GLuint *map; + GLuint attr; + GLbitfield varying_inputs = 0x0; + + /* Install the default (ie Current) attributes first, then overlay + * all active ones. + */ + switch (get_program_mode(exec->ctx)) { + case VP_NONE: + for (attr = 0; attr < 16; attr++) { + exec->vtx.inputs[attr] = &vbo->legacy_currval[attr]; + } + for (attr = 0; attr < MAT_ATTRIB_MAX; attr++) { + ASSERT(attr + 16 < Elements(exec->vtx.inputs)); + exec->vtx.inputs[attr + 16] = &vbo->mat_currval[attr]; + } + map = vbo->map_vp_none; + break; + case VP_NV: + case VP_ARB: + /* The aliasing of attributes for NV vertex programs has already + * occurred. NV vertex programs cannot access material values, + * nor attributes greater than VERT_ATTRIB_TEX7. + */ + for (attr = 0; attr < 16; attr++) { + exec->vtx.inputs[attr] = &vbo->legacy_currval[attr]; + ASSERT(attr + 16 < Elements(exec->vtx.inputs)); + exec->vtx.inputs[attr + 16] = &vbo->generic_currval[attr]; + } + map = vbo->map_vp_arb; + + /* check if VERT_ATTRIB_POS is not read but VERT_BIT_GENERIC0 is read. + * In that case we effectively need to route the data from + * glVertexAttrib(0, val) calls to feed into the GENERIC0 input. + */ + if ((ctx->VertexProgram._Current->Base.InputsRead & VERT_BIT_POS) == 0 && + (ctx->VertexProgram._Current->Base.InputsRead & VERT_BIT_GENERIC0)) { + exec->vtx.inputs[16] = exec->vtx.inputs[0]; + exec->vtx.attrsz[16] = exec->vtx.attrsz[0]; + exec->vtx.attrptr[16] = exec->vtx.attrptr[0]; + exec->vtx.attrsz[0] = 0; + } + break; + default: + assert(0); + } + + /* Make all active attributes (including edgeflag) available as + * arrays of floats. + */ + for (attr = 0; attr < VERT_ATTRIB_MAX ; attr++) { + const GLuint src = map[attr]; + + if (exec->vtx.attrsz[src]) { + GLsizeiptr offset = (GLbyte *)exec->vtx.attrptr[src] - + (GLbyte *)exec->vtx.vertex; + + /* override the default array set above */ + ASSERT(attr < Elements(exec->vtx.inputs)); + ASSERT(attr < Elements(exec->vtx.arrays)); /* arrays[] */ + exec->vtx.inputs[attr] = &arrays[attr]; + + if (_mesa_is_bufferobj(exec->vtx.bufferobj)) { + /* a real buffer obj: Ptr is an offset, not a pointer*/ + assert(exec->vtx.bufferobj->Pointer); /* buf should be mapped */ + assert(offset >= 0); + arrays[attr].Ptr = (GLubyte *)exec->vtx.bufferobj->Offset + offset; + } + else { + /* Ptr into ordinary app memory */ + arrays[attr].Ptr = (GLubyte *)exec->vtx.buffer_map + offset; + } + arrays[attr].Size = exec->vtx.attrsz[src]; + arrays[attr].StrideB = exec->vtx.vertex_size * sizeof(GLfloat); + arrays[attr].Stride = exec->vtx.vertex_size * sizeof(GLfloat); + arrays[attr].Type = GL_FLOAT; + arrays[attr].Format = GL_RGBA; + arrays[attr].Enabled = 1; + arrays[attr]._ElementSize = arrays[attr].Size * sizeof(GLfloat); + _mesa_reference_buffer_object(ctx, + &arrays[attr].BufferObj, + exec->vtx.bufferobj); + arrays[attr]._MaxElement = count; /* ??? */ + + varying_inputs |= 1 << attr; + ctx->NewState |= _NEW_ARRAY; + } + } + + _mesa_set_varying_vp_inputs( ctx, varying_inputs ); +} + + +/** + * Unmap the VBO. This is called before drawing. + */ +static void +vbo_exec_vtx_unmap( struct vbo_exec_context *exec ) +{ + if (_mesa_is_bufferobj(exec->vtx.bufferobj)) { + struct gl_context *ctx = exec->ctx; + + if (ctx->Driver.FlushMappedBufferRange) { + GLintptr offset = exec->vtx.buffer_used - exec->vtx.bufferobj->Offset; + GLsizeiptr length = (exec->vtx.buffer_ptr - exec->vtx.buffer_map) * sizeof(float); + + if (length) + ctx->Driver.FlushMappedBufferRange(ctx, offset, length, + exec->vtx.bufferobj); + } + + exec->vtx.buffer_used += (exec->vtx.buffer_ptr - + exec->vtx.buffer_map) * sizeof(float); + + assert(exec->vtx.buffer_used <= VBO_VERT_BUFFER_SIZE); + assert(exec->vtx.buffer_ptr != NULL); + + ctx->Driver.UnmapBuffer(ctx, exec->vtx.bufferobj); + exec->vtx.buffer_map = NULL; + exec->vtx.buffer_ptr = NULL; + exec->vtx.max_vert = 0; + } +} + + +/** + * Map the vertex buffer to begin storing glVertex, glColor, etc data. + */ +void +vbo_exec_vtx_map( struct vbo_exec_context *exec ) +{ + struct gl_context *ctx = exec->ctx; + const GLenum accessRange = GL_MAP_WRITE_BIT | /* for MapBufferRange */ + GL_MAP_INVALIDATE_RANGE_BIT | + GL_MAP_UNSYNCHRONIZED_BIT | + GL_MAP_FLUSH_EXPLICIT_BIT | + MESA_MAP_NOWAIT_BIT; + const GLenum usage = GL_STREAM_DRAW_ARB; + + if (!_mesa_is_bufferobj(exec->vtx.bufferobj)) + return; + + assert(!exec->vtx.buffer_map); + assert(!exec->vtx.buffer_ptr); + + if (VBO_VERT_BUFFER_SIZE > exec->vtx.buffer_used + 1024) { + /* The VBO exists and there's room for more */ + exec->vtx.buffer_map = + (GLfloat *)ctx->Driver.MapBufferRange(ctx, + exec->vtx.buffer_used, + (VBO_VERT_BUFFER_SIZE - + exec->vtx.buffer_used), + accessRange, + exec->vtx.bufferobj); + exec->vtx.buffer_ptr = exec->vtx.buffer_map; + } + + if (!exec->vtx.buffer_map) { + /* Need to allocate a new VBO */ + exec->vtx.buffer_used = 0; + + ctx->Driver.BufferData(ctx, GL_ARRAY_BUFFER_ARB, + VBO_VERT_BUFFER_SIZE, + NULL, usage, exec->vtx.bufferobj); + + + exec->vtx.buffer_map = + (GLfloat *)ctx->Driver.MapBufferRange(ctx, + 0, VBO_VERT_BUFFER_SIZE, + accessRange, + exec->vtx.bufferobj); + assert(exec->vtx.buffer_map); + exec->vtx.buffer_ptr = exec->vtx.buffer_map; + } + + if (0) + printf("map %d..\n", exec->vtx.buffer_used); +} + + + +/** + * Execute the buffer and save copied verts. + * \param keep_unmapped if true, leave the VBO unmapped when we're done. + */ +void +vbo_exec_vtx_flush(struct vbo_exec_context *exec, GLboolean keepUnmapped) +{ + if (0) + vbo_exec_debug_verts( exec ); + + if (exec->vtx.prim_count && + exec->vtx.vert_count) { + + exec->vtx.copied.nr = vbo_copy_vertices( exec ); + + if (exec->vtx.copied.nr != exec->vtx.vert_count) { + struct gl_context *ctx = exec->ctx; + + /* Before the update_state() as this may raise _NEW_ARRAY + * from _mesa_set_varying_vp_inputs(). + */ + vbo_exec_bind_arrays( ctx ); + + if (ctx->NewState) + _mesa_update_state( ctx ); + + if (_mesa_is_bufferobj(exec->vtx.bufferobj)) { + vbo_exec_vtx_unmap( exec ); + } + + if (0) + printf("%s %d %d\n", __FUNCTION__, exec->vtx.prim_count, + exec->vtx.vert_count); + + vbo_context(ctx)->draw_prims( ctx, + exec->vtx.inputs, + exec->vtx.prim, + exec->vtx.prim_count, + NULL, + GL_TRUE, + 0, + exec->vtx.vert_count - 1); + + /* If using a real VBO, get new storage -- unless asked not to. + */ + if (_mesa_is_bufferobj(exec->vtx.bufferobj) && !keepUnmapped) { + vbo_exec_vtx_map( exec ); + } + } + } + + /* May have to unmap explicitly if we didn't draw: + */ + if (keepUnmapped && + _mesa_is_bufferobj(exec->vtx.bufferobj) && + exec->vtx.buffer_map) { + vbo_exec_vtx_unmap( exec ); + } + + if (keepUnmapped || exec->vtx.vertex_size == 0) + exec->vtx.max_vert = 0; + else + exec->vtx.max_vert = ((VBO_VERT_BUFFER_SIZE - exec->vtx.buffer_used) / + (exec->vtx.vertex_size * sizeof(GLfloat))); + + exec->vtx.buffer_ptr = exec->vtx.buffer_map; + exec->vtx.prim_count = 0; + exec->vtx.vert_count = 0; +} + + +#endif /* FEATURE_beginend */ |