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Diffstat (limited to 'mesalib/src/mesa/vbo/vbo_exec_draw.c')
-rw-r--r--mesalib/src/mesa/vbo/vbo_exec_draw.c413
1 files changed, 413 insertions, 0 deletions
diff --git a/mesalib/src/mesa/vbo/vbo_exec_draw.c b/mesalib/src/mesa/vbo/vbo_exec_draw.c
new file mode 100644
index 000000000..0c258c535
--- /dev/null
+++ b/mesalib/src/mesa/vbo/vbo_exec_draw.c
@@ -0,0 +1,413 @@
+/*
+ * 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/context.h"
+#include "main/enums.h"
+#include "main/state.h"
+#include "main/macros.h"
+
+#include "vbo_context.h"
+
+
+static void
+vbo_exec_debug_verts( struct vbo_exec_context *exec )
+{
+ GLuint count = exec->vtx.vert_count;
+ GLuint i;
+
+ _mesa_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];
+ _mesa_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++)
+ _mesa_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++)
+ _mesa_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++)
+ _mesa_memcpy( dst+i*sz, src+(nr-ovf+i)*sz, sz * sizeof(GLfloat) );
+ return i;
+ case GL_LINE_STRIP:
+ if (nr == 0) {
+ return 0;
+ }
+ else {
+ _mesa_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) {
+ _mesa_memcpy( dst, src+0, sz * sizeof(GLfloat) );
+ return 1;
+ }
+ else {
+ _mesa_memcpy( dst, src+0, sz * sizeof(GLfloat) );
+ _mesa_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++)
+ _mesa_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( GLcontext *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 GLubyte *data = (GLubyte *) exec->vtx.buffer_map;
+ 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++) {
+ 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];
+ 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]) {
+ /* override the default array set above */
+ exec->vtx.inputs[attr] = &arrays[attr];
+
+ if (_mesa_is_bufferobj(exec->vtx.bufferobj)) {
+ /* a real buffer obj: Ptr is an offset, not a pointer*/
+ GLsizeiptr offset;
+ assert(exec->vtx.bufferobj->Pointer); /* buf should be mapped */
+ offset = (GLbyte *) data -
+ (GLbyte *) exec->vtx.bufferobj->Pointer +
+ exec->vtx.bufferobj->Offset;
+ assert(offset >= 0);
+ arrays[attr].Ptr = (void *) offset;
+ }
+ else {
+ /* Ptr into ordinary app memory */
+ arrays[attr].Ptr = (void *) data;
+ }
+ 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;
+ _mesa_reference_buffer_object(ctx,
+ &arrays[attr].BufferObj,
+ exec->vtx.bufferobj);
+ arrays[attr]._MaxElement = count; /* ??? */
+
+ data += exec->vtx.attrsz[src] * sizeof(GLfloat);
+ varying_inputs |= 1 << attr;
+ }
+ }
+
+ _mesa_set_varying_vp_inputs( ctx, varying_inputs );
+}
+
+
+static void
+vbo_exec_vtx_unmap( struct vbo_exec_context *exec )
+{
+ GLenum target = GL_ARRAY_BUFFER_ARB;
+
+ if (_mesa_is_bufferobj(exec->vtx.bufferobj)) {
+ GLcontext *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;
+ }
+}
+
+
+void
+vbo_exec_vtx_map( struct vbo_exec_context *exec )
+{
+ GLcontext *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;
+
+ if (exec->vtx.buffer_map != NULL) {
+ assert(0);
+ exec->vtx.buffer_map = NULL;
+ exec->vtx.buffer_ptr = NULL;
+ }
+
+ if (VBO_VERT_BUFFER_SIZE > exec->vtx.buffer_used + 1024 &&
+ ctx->Driver.MapBufferRange) {
+ 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) {
+ 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)
+ _mesa_printf("map %d..\n", exec->vtx.buffer_used);
+}
+
+
+
+/**
+ * Execute the buffer and save copied verts.
+ */
+void
+vbo_exec_vtx_flush( struct vbo_exec_context *exec, GLboolean unmap )
+{
+ 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) {
+ GLcontext *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)
+ _mesa_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) && !unmap) {
+ vbo_exec_vtx_map( exec );
+ }
+ }
+ }
+
+ /* May have to unmap explicitly if we didn't draw:
+ */
+ if (unmap &&
+ _mesa_is_bufferobj(exec->vtx.bufferobj) &&
+ exec->vtx.buffer_map) {
+ vbo_exec_vtx_unmap( exec );
+ }
+
+
+ if (unmap || 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;
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-06 00:06:10 +0000