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path: root/src/mesa/state_tracker/st_draw.c
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-rw-r--r--src/mesa/state_tracker/st_draw.c697
1 files changed, 697 insertions, 0 deletions
diff --git a/src/mesa/state_tracker/st_draw.c b/src/mesa/state_tracker/st_draw.c
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+++ b/src/mesa/state_tracker/st_draw.c
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+/**************************************************************************
+ *
+ * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
+ * 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.
+ *
+ **************************************************************************/
+
+ /*
+ * Authors:
+ * Keith Whitwell <keith@tungstengraphics.com>
+ */
+
+#include "main/imports.h"
+#include "main/image.h"
+#include "main/macros.h"
+#include "shader/prog_uniform.h"
+
+#include "vbo/vbo.h"
+
+#include "st_context.h"
+#include "st_atom.h"
+#include "st_cb_bufferobjects.h"
+#include "st_draw.h"
+#include "st_program.h"
+
+#include "pipe/p_context.h"
+#include "pipe/p_defines.h"
+#include "pipe/p_inlines.h"
+
+
+static GLuint double_types[4] = {
+ PIPE_FORMAT_R64_FLOAT,
+ PIPE_FORMAT_R64G64_FLOAT,
+ PIPE_FORMAT_R64G64B64_FLOAT,
+ PIPE_FORMAT_R64G64B64A64_FLOAT
+};
+
+static GLuint float_types[4] = {
+ PIPE_FORMAT_R32_FLOAT,
+ PIPE_FORMAT_R32G32_FLOAT,
+ PIPE_FORMAT_R32G32B32_FLOAT,
+ PIPE_FORMAT_R32G32B32A32_FLOAT
+};
+
+static GLuint uint_types_norm[4] = {
+ PIPE_FORMAT_R32_UNORM,
+ PIPE_FORMAT_R32G32_UNORM,
+ PIPE_FORMAT_R32G32B32_UNORM,
+ PIPE_FORMAT_R32G32B32A32_UNORM
+};
+
+static GLuint uint_types_scale[4] = {
+ PIPE_FORMAT_R32_USCALED,
+ PIPE_FORMAT_R32G32_USCALED,
+ PIPE_FORMAT_R32G32B32_USCALED,
+ PIPE_FORMAT_R32G32B32A32_USCALED
+};
+
+static GLuint int_types_norm[4] = {
+ PIPE_FORMAT_R32_SNORM,
+ PIPE_FORMAT_R32G32_SNORM,
+ PIPE_FORMAT_R32G32B32_SNORM,
+ PIPE_FORMAT_R32G32B32A32_SNORM
+};
+
+static GLuint int_types_scale[4] = {
+ PIPE_FORMAT_R32_SSCALED,
+ PIPE_FORMAT_R32G32_SSCALED,
+ PIPE_FORMAT_R32G32B32_SSCALED,
+ PIPE_FORMAT_R32G32B32A32_SSCALED
+};
+
+static GLuint ushort_types_norm[4] = {
+ PIPE_FORMAT_R16_UNORM,
+ PIPE_FORMAT_R16G16_UNORM,
+ PIPE_FORMAT_R16G16B16_UNORM,
+ PIPE_FORMAT_R16G16B16A16_UNORM
+};
+
+static GLuint ushort_types_scale[4] = {
+ PIPE_FORMAT_R16_USCALED,
+ PIPE_FORMAT_R16G16_USCALED,
+ PIPE_FORMAT_R16G16B16_USCALED,
+ PIPE_FORMAT_R16G16B16A16_USCALED
+};
+
+static GLuint short_types_norm[4] = {
+ PIPE_FORMAT_R16_SNORM,
+ PIPE_FORMAT_R16G16_SNORM,
+ PIPE_FORMAT_R16G16B16_SNORM,
+ PIPE_FORMAT_R16G16B16A16_SNORM
+};
+
+static GLuint short_types_scale[4] = {
+ PIPE_FORMAT_R16_SSCALED,
+ PIPE_FORMAT_R16G16_SSCALED,
+ PIPE_FORMAT_R16G16B16_SSCALED,
+ PIPE_FORMAT_R16G16B16A16_SSCALED
+};
+
+static GLuint ubyte_types_norm[4] = {
+ PIPE_FORMAT_R8_UNORM,
+ PIPE_FORMAT_R8G8_UNORM,
+ PIPE_FORMAT_R8G8B8_UNORM,
+ PIPE_FORMAT_R8G8B8A8_UNORM
+};
+
+static GLuint ubyte_types_scale[4] = {
+ PIPE_FORMAT_R8_USCALED,
+ PIPE_FORMAT_R8G8_USCALED,
+ PIPE_FORMAT_R8G8B8_USCALED,
+ PIPE_FORMAT_R8G8B8A8_USCALED
+};
+
+static GLuint byte_types_norm[4] = {
+ PIPE_FORMAT_R8_SNORM,
+ PIPE_FORMAT_R8G8_SNORM,
+ PIPE_FORMAT_R8G8B8_SNORM,
+ PIPE_FORMAT_R8G8B8A8_SNORM
+};
+
+static GLuint byte_types_scale[4] = {
+ PIPE_FORMAT_R8_SSCALED,
+ PIPE_FORMAT_R8G8_SSCALED,
+ PIPE_FORMAT_R8G8B8_SSCALED,
+ PIPE_FORMAT_R8G8B8A8_SSCALED
+};
+
+static GLuint fixed_types[4] = {
+ PIPE_FORMAT_R32_FIXED,
+ PIPE_FORMAT_R32G32_FIXED,
+ PIPE_FORMAT_R32G32B32_FIXED,
+ PIPE_FORMAT_R32G32B32A32_FIXED
+};
+
+
+
+/**
+ * Return a PIPE_FORMAT_x for the given GL datatype and size.
+ */
+GLuint
+st_pipe_vertex_format(GLenum type, GLuint size, GLboolean normalized)
+{
+ assert((type >= GL_BYTE && type <= GL_DOUBLE) ||
+ type == GL_FIXED);
+ assert(size >= 1);
+ assert(size <= 4);
+
+ if (normalized) {
+ switch (type) {
+ case GL_DOUBLE: return double_types[size-1];
+ case GL_FLOAT: return float_types[size-1];
+ case GL_INT: return int_types_norm[size-1];
+ case GL_SHORT: return short_types_norm[size-1];
+ case GL_BYTE: return byte_types_norm[size-1];
+ case GL_UNSIGNED_INT: return uint_types_norm[size-1];
+ case GL_UNSIGNED_SHORT: return ushort_types_norm[size-1];
+ case GL_UNSIGNED_BYTE: return ubyte_types_norm[size-1];
+ case GL_FIXED: return fixed_types[size-1];
+ default: assert(0); return 0;
+ }
+ }
+ else {
+ switch (type) {
+ case GL_DOUBLE: return double_types[size-1];
+ case GL_FLOAT: return float_types[size-1];
+ case GL_INT: return int_types_scale[size-1];
+ case GL_SHORT: return short_types_scale[size-1];
+ case GL_BYTE: return byte_types_scale[size-1];
+ case GL_UNSIGNED_INT: return uint_types_scale[size-1];
+ case GL_UNSIGNED_SHORT: return ushort_types_scale[size-1];
+ case GL_UNSIGNED_BYTE: return ubyte_types_scale[size-1];
+ case GL_FIXED: return fixed_types[size-1];
+ default: assert(0); return 0;
+ }
+ }
+ return 0; /* silence compiler warning */
+}
+
+
+/*
+ * If edge flags are needed, setup an bitvector of flags and call
+ * pipe->set_edgeflags().
+ * XXX memleak: need to free the returned pointer at some point
+ */
+static void *
+setup_edgeflags(GLcontext *ctx, GLenum primMode, GLint start, GLint count,
+ const struct gl_client_array *array)
+{
+ struct pipe_context *pipe = ctx->st->pipe;
+
+ if ((primMode == GL_TRIANGLES ||
+ primMode == GL_QUADS ||
+ primMode == GL_POLYGON) &&
+ (ctx->Polygon.FrontMode != GL_FILL ||
+ ctx->Polygon.BackMode != GL_FILL)) {
+ /* need edge flags */
+ GLint i;
+ unsigned *vec;
+ struct st_buffer_object *stobj = st_buffer_object(array->BufferObj);
+ ubyte *map;
+
+ if (!stobj)
+ return NULL;
+
+ vec = (unsigned *) calloc(sizeof(unsigned), (count + 31) / 32);
+ if (!vec)
+ return NULL;
+
+ map = pipe_buffer_map(pipe->screen, stobj->buffer, PIPE_BUFFER_USAGE_CPU_READ);
+ map = ADD_POINTERS(map, array->Ptr);
+
+ for (i = 0; i < count; i++) {
+ if (*((float *) map))
+ vec[i/32] |= 1 << (i % 32);
+
+ map += array->StrideB;
+ }
+
+ pipe_buffer_unmap(pipe->screen, stobj->buffer);
+
+ pipe->set_edgeflags(pipe, vec);
+
+ return vec;
+ }
+ else {
+ /* edge flags not needed */
+ pipe->set_edgeflags(pipe, NULL);
+ return NULL;
+ }
+}
+
+
+/**
+ * Examine the active arrays to determine if we have interleaved
+ * vertex arrays all living in one VBO, or all living in user space.
+ * \param userSpace returns whether the arrays are in user space.
+ */
+static GLboolean
+is_interleaved_arrays(const struct st_vertex_program *vp,
+ const struct gl_client_array **arrays,
+ GLboolean *userSpace)
+{
+ GLuint attr;
+ const struct gl_buffer_object *firstBufObj = NULL;
+ GLint firstStride = -1;
+ GLuint num_client_arrays = 0;
+ const GLubyte *client_addr = NULL;
+
+ for (attr = 0; attr < vp->num_inputs; attr++) {
+ const GLuint mesaAttr = vp->index_to_input[attr];
+ const struct gl_buffer_object *bufObj = arrays[mesaAttr]->BufferObj;
+ const GLsizei stride = arrays[mesaAttr]->StrideB; /* in bytes */
+
+ if (firstStride < 0) {
+ firstStride = stride;
+ }
+ else if (firstStride != stride) {
+ return GL_FALSE;
+ }
+
+ if (!bufObj || !bufObj->Name) {
+ num_client_arrays++;
+ /* Try to detect if the client-space arrays are
+ * "close" to each other.
+ */
+ if (!client_addr) {
+ client_addr = arrays[mesaAttr]->Ptr;
+ }
+ else if (abs(arrays[mesaAttr]->Ptr - client_addr) > firstStride) {
+ /* arrays start too far apart */
+ return GL_FALSE;
+ }
+ }
+ else if (!firstBufObj) {
+ firstBufObj = bufObj;
+ }
+ else if (bufObj != firstBufObj) {
+ return GL_FALSE;
+ }
+ }
+
+ *userSpace = (num_client_arrays == vp->num_inputs);
+ /* printf("user space: %d (%d %d)\n", (int) *userSpace,num_client_arrays,vp->num_inputs); */
+
+ return GL_TRUE;
+}
+
+
+/**
+ * Compute the memory range occupied by the arrays.
+ */
+static void
+get_arrays_bounds(const struct st_vertex_program *vp,
+ const struct gl_client_array **arrays,
+ GLuint max_index,
+ const GLubyte **low, const GLubyte **high)
+{
+ const GLubyte *low_addr = NULL;
+ GLuint attr;
+ GLint stride;
+
+ for (attr = 0; attr < vp->num_inputs; attr++) {
+ const GLuint mesaAttr = vp->index_to_input[attr];
+ const GLubyte *start = arrays[mesaAttr]->Ptr;
+ stride = arrays[mesaAttr]->StrideB;
+ if (attr == 0) {
+ low_addr = start;
+ }
+ else {
+ low_addr = MIN2(low_addr, start);
+ }
+ }
+
+ *low = low_addr;
+ *high = low_addr + (max_index + 1) * stride;
+}
+
+
+/**
+ * Set up for drawing interleaved arrays that all live in one VBO
+ * or all live in user space.
+ * \param vbuffer returns vertex buffer info
+ * \param velements returns vertex element info
+ */
+static void
+setup_interleaved_attribs(GLcontext *ctx,
+ const struct st_vertex_program *vp,
+ const struct gl_client_array **arrays,
+ GLuint max_index,
+ GLboolean userSpace,
+ struct pipe_vertex_buffer *vbuffer,
+ struct pipe_vertex_element velements[])
+{
+ struct pipe_context *pipe = ctx->st->pipe;
+ GLuint attr;
+ const GLubyte *offset0;
+
+ for (attr = 0; attr < vp->num_inputs; attr++) {
+ const GLuint mesaAttr = vp->index_to_input[attr];
+ struct gl_buffer_object *bufobj = arrays[mesaAttr]->BufferObj;
+ struct st_buffer_object *stobj = st_buffer_object(bufobj);
+ GLsizei stride = arrays[mesaAttr]->StrideB;
+
+ /*printf("stobj %u = %p\n", attr, (void*)stobj);*/
+
+ if (attr == 0) {
+ const GLubyte *low, *high;
+
+ get_arrays_bounds(vp, arrays, max_index, &low, &high);
+ /*printf("buffer range: %p %p %d\n", low, high, high-low);*/
+
+ offset0 = low;
+ if (userSpace) {
+ vbuffer->buffer =
+ pipe_user_buffer_create(pipe->screen, (void *) low, high - low);
+ vbuffer->buffer_offset = 0;
+ }
+ else {
+ vbuffer->buffer = NULL;
+ pipe_buffer_reference(pipe->screen, &vbuffer->buffer, stobj->buffer);
+ vbuffer->buffer_offset = (unsigned) arrays[mesaAttr]->Ptr;
+ }
+ vbuffer->pitch = stride; /* in bytes */
+ vbuffer->max_index = max_index;
+ }
+
+ velements[attr].src_offset =
+ (unsigned) (arrays[mesaAttr]->Ptr - offset0);
+ velements[attr].vertex_buffer_index = 0;
+ velements[attr].nr_components = arrays[mesaAttr]->Size;
+ velements[attr].src_format =
+ st_pipe_vertex_format(arrays[mesaAttr]->Type,
+ arrays[mesaAttr]->Size,
+ arrays[mesaAttr]->Normalized);
+ assert(velements[attr].src_format);
+ }
+}
+
+
+/**
+ * Set up a separate pipe_vertex_buffer and pipe_vertex_element for each
+ * vertex attribute.
+ * \param vbuffer returns vertex buffer info
+ * \param velements returns vertex element info
+ */
+static void
+setup_non_interleaved_attribs(GLcontext *ctx,
+ const struct st_vertex_program *vp,
+ const struct gl_client_array **arrays,
+ GLuint max_index,
+ GLboolean *userSpace,
+ struct pipe_vertex_buffer vbuffer[],
+ struct pipe_vertex_element velements[])
+{
+ struct pipe_context *pipe = ctx->st->pipe;
+ GLuint attr;
+
+ for (attr = 0; attr < vp->num_inputs; attr++) {
+ const GLuint mesaAttr = vp->index_to_input[attr];
+ struct gl_buffer_object *bufobj = arrays[mesaAttr]->BufferObj;
+ GLsizei stride = arrays[mesaAttr]->StrideB;
+
+ *userSpace = GL_FALSE;
+
+ if (bufobj && bufobj->Name) {
+ /* Attribute data is in a VBO.
+ * Recall that for VBOs, the gl_client_array->Ptr field is
+ * really an offset from the start of the VBO, not a pointer.
+ */
+ struct st_buffer_object *stobj = st_buffer_object(bufobj);
+ assert(stobj->buffer);
+ /*printf("stobj %u = %p\n", attr, (void*) stobj);*/
+
+ vbuffer[attr].buffer = NULL;
+ pipe_buffer_reference(pipe->screen, &vbuffer[attr].buffer, stobj->buffer);
+ vbuffer[attr].buffer_offset = (unsigned) arrays[mesaAttr]->Ptr;
+ velements[attr].src_offset = 0;
+ }
+ else {
+ /* attribute data is in user-space memory, not a VBO */
+ uint bytes;
+ /*printf("user-space array %d stride %d\n", attr, stride);*/
+
+ *userSpace = GL_TRUE;
+
+ /* wrap user data */
+ if (arrays[mesaAttr]->Ptr) {
+ /* user's vertex array */
+ if (arrays[mesaAttr]->StrideB) {
+ bytes = arrays[mesaAttr]->StrideB * (max_index + 1);
+ }
+ else {
+ bytes = arrays[mesaAttr]->Size
+ * _mesa_sizeof_type(arrays[mesaAttr]->Type);
+ }
+ vbuffer[attr].buffer = pipe_user_buffer_create(pipe->screen,
+ (void *) arrays[mesaAttr]->Ptr, bytes);
+ }
+ else {
+ /* no array, use ctx->Current.Attrib[] value */
+ bytes = sizeof(ctx->Current.Attrib[0]);
+ vbuffer[attr].buffer = pipe_user_buffer_create(pipe->screen,
+ (void *) ctx->Current.Attrib[mesaAttr], bytes);
+ stride = 0;
+ }
+
+ vbuffer[attr].buffer_offset = 0;
+ velements[attr].src_offset = 0;
+ }
+
+ assert(velements[attr].src_offset <= 2048); /* 11-bit field */
+
+ /* common-case setup */
+ vbuffer[attr].pitch = stride; /* in bytes */
+ vbuffer[attr].max_index = max_index;
+ velements[attr].vertex_buffer_index = attr;
+ velements[attr].nr_components = arrays[mesaAttr]->Size;
+ velements[attr].src_format
+ = st_pipe_vertex_format(arrays[mesaAttr]->Type,
+ arrays[mesaAttr]->Size,
+ arrays[mesaAttr]->Normalized);
+ assert(velements[attr].src_format);
+ }
+}
+
+
+
+/**
+ * Prior to drawing, check that any uniforms referenced by the
+ * current shader have been set. If a uniform has not been set,
+ * issue a warning.
+ */
+static void
+check_uniforms(GLcontext *ctx)
+{
+ const struct gl_shader_program *shProg = ctx->Shader.CurrentProgram;
+ if (shProg && shProg->LinkStatus) {
+ GLuint i;
+ for (i = 0; i < shProg->Uniforms->NumUniforms; i++) {
+ const struct gl_uniform *u = &shProg->Uniforms->Uniforms[i];
+ if (!u->Initialized) {
+ _mesa_warning(ctx,
+ "Using shader with uninitialized uniform: %s",
+ u->Name);
+ }
+ }
+ }
+}
+
+
+/**
+ * This function gets plugged into the VBO module and is called when
+ * we have something to render.
+ * Basically, translate the information into the format expected by gallium.
+ */
+void
+st_draw_vbo(GLcontext *ctx,
+ const struct gl_client_array **arrays,
+ const struct _mesa_prim *prims,
+ GLuint nr_prims,
+ const struct _mesa_index_buffer *ib,
+ GLuint min_index,
+ GLuint max_index)
+{
+ struct pipe_context *pipe = ctx->st->pipe;
+ const struct st_vertex_program *vp;
+ const struct pipe_shader_state *vs;
+ struct pipe_vertex_buffer vbuffer[PIPE_MAX_SHADER_INPUTS];
+ GLuint attr;
+ struct pipe_vertex_element velements[PIPE_MAX_ATTRIBS];
+ unsigned num_vbuffers, num_velements;
+ GLboolean userSpace;
+
+ /* sanity check for pointer arithmetic below */
+ assert(sizeof(arrays[0]->Ptr[0]) == 1);
+
+ st_validate_state(ctx->st);
+
+ /* must get these after state validation! */
+ vp = ctx->st->vp;
+ vs = &ctx->st->vp->state;
+
+ if (MESA_VERBOSE & VERBOSE_GLSL) {
+ check_uniforms(ctx);
+ }
+
+ /*
+ * Setup the vbuffer[] and velements[] arrays.
+ */
+ if (is_interleaved_arrays(vp, arrays, &userSpace)) {
+ /*printf("Draw interleaved\n");*/
+ setup_interleaved_attribs(ctx, vp, arrays, max_index, userSpace,
+ vbuffer, velements);
+ num_vbuffers = 1;
+ num_velements = vp->num_inputs;
+ if (num_velements == 0)
+ num_vbuffers = 0;
+ }
+ else {
+ /*printf("Draw non-interleaved\n");*/
+ setup_non_interleaved_attribs(ctx, vp, arrays, max_index,
+ &userSpace, vbuffer, velements);
+ num_vbuffers = vp->num_inputs;
+ num_velements = vp->num_inputs;
+ }
+
+#if 0
+ {
+ GLuint i;
+ for (i = 0; i < num_vbuffers; i++) {
+ printf("buffers[%d].pitch = %u\n", i, vbuffer[i].pitch);
+ printf("buffers[%d].max_index = %u\n", i, vbuffer[i].max_index);
+ printf("buffers[%d].buffer_offset = %u\n", i, vbuffer[i].buffer_offset);
+ printf("buffers[%d].buffer = %p\n", i, (void*) vbuffer[i].buffer);
+ }
+ for (i = 0; i < num_velements; i++) {
+ printf("vlements[%d].vbuffer_index = %u\n", i, velements[i].vertex_buffer_index);
+ printf("vlements[%d].src_offset = %u\n", i, velements[i].src_offset);
+ printf("vlements[%d].nr_comps = %u\n", i, velements[i].nr_components);
+ printf("vlements[%d].format = %s\n", i, pf_name(velements[i].src_format));
+ }
+ }
+#endif
+
+ pipe->set_vertex_buffers(pipe, num_vbuffers, vbuffer);
+ pipe->set_vertex_elements(pipe, num_velements, velements);
+
+ if (num_vbuffers == 0 || num_velements == 0)
+ return;
+
+ /* do actual drawing */
+ if (ib) {
+ /* indexed primitive */
+ struct gl_buffer_object *bufobj = ib->obj;
+ struct pipe_buffer *indexBuf = NULL;
+ unsigned indexSize, indexOffset, i;
+
+ switch (ib->type) {
+ case GL_UNSIGNED_INT:
+ indexSize = 4;
+ break;
+ case GL_UNSIGNED_SHORT:
+ indexSize = 2;
+ break;
+ case GL_UNSIGNED_BYTE:
+ indexSize = 1;
+ break;
+ default:
+ assert(0);
+ return;
+ }
+
+ /* get/create the index buffer object */
+ if (bufobj && bufobj->Name) {
+ /* elements/indexes are in a real VBO */
+ struct st_buffer_object *stobj = st_buffer_object(bufobj);
+ pipe_buffer_reference(pipe->screen, &indexBuf, stobj->buffer);
+ indexOffset = (unsigned) ib->ptr / indexSize;
+ }
+ else {
+ /* element/indicies are in user space memory */
+ indexBuf = pipe_user_buffer_create(pipe->screen, (void *) ib->ptr,
+ ib->count * indexSize);
+ indexOffset = 0;
+ }
+
+ /* draw */
+ if (nr_prims == 1 && pipe->draw_range_elements != NULL) {
+ i = 0;
+
+ /* XXX: exercise temporary path to pass min/max directly
+ * through to driver & draw module. These interfaces still
+ * need a bit of work...
+ */
+ setup_edgeflags(ctx, prims[i].mode,
+ prims[i].start + indexOffset, prims[i].count,
+ arrays[VERT_ATTRIB_EDGEFLAG]);
+
+ pipe->draw_range_elements(pipe, indexBuf, indexSize,
+ min_index,
+ max_index,
+ prims[i].mode,
+ prims[i].start + indexOffset, prims[i].count);
+ }
+ else {
+ for (i = 0; i < nr_prims; i++) {
+ setup_edgeflags(ctx, prims[i].mode,
+ prims[i].start + indexOffset, prims[i].count,
+ arrays[VERT_ATTRIB_EDGEFLAG]);
+
+ pipe->draw_elements(pipe, indexBuf, indexSize,
+ prims[i].mode,
+ prims[i].start + indexOffset, prims[i].count);
+ }
+ }
+
+ pipe_buffer_reference(pipe->screen, &indexBuf, NULL);
+ }
+ else {
+ /* non-indexed */
+ GLuint i;
+ for (i = 0; i < nr_prims; i++) {
+ setup_edgeflags(ctx, prims[i].mode,
+ prims[i].start, prims[i].count,
+ arrays[VERT_ATTRIB_EDGEFLAG]);
+
+ pipe->draw_arrays(pipe, prims[i].mode, prims[i].start, prims[i].count);
+ }
+ }
+
+ /* unreference buffers (frees wrapped user-space buffer objects) */
+ for (attr = 0; attr < num_vbuffers; attr++) {
+ pipe_buffer_reference(pipe->screen, &vbuffer[attr].buffer, NULL);
+ assert(!vbuffer[attr].buffer);
+ }
+
+ if (userSpace)
+ {
+ pipe->set_vertex_buffers(pipe, 0, NULL);
+ }
+}
+
+
+void st_init_draw( struct st_context *st )
+{
+ GLcontext *ctx = st->ctx;
+
+ vbo_set_draw_func(ctx, st_draw_vbo);
+}
+
+
+void st_destroy_draw( struct st_context *st )
+{
+}
+
+
generated by cgit v1.2.3 (git 2.51.0) at 2025-10-31 23:42:13 +0000