diff options
Diffstat (limited to 'src/mesa/vbo/vbo_exec_array.c')
| -rw-r--r-- | src/mesa/vbo/vbo_exec_array.c | 652 |
1 files changed, 552 insertions, 100 deletions
diff --git a/src/mesa/vbo/vbo_exec_array.c b/src/mesa/vbo/vbo_exec_array.c index de66cdd92f..3f0656a816 100644 --- a/src/mesa/vbo/vbo_exec_array.c +++ b/src/mesa/vbo/vbo_exec_array.c @@ -1,6 +1,7 @@ /************************************************************************** * * 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 @@ -32,20 +33,36 @@ #include "main/api_noop.h" #include "main/varray.h" #include "main/bufferobj.h" +#include "main/macros.h" #include "glapi/dispatch.h" #include "vbo_context.h" -/* Compute min and max elements for drawelements calls. + +/** + * Compute min and max elements for glDraw[Range]Elements() calls. */ -static void get_minmax_index( GLuint count, GLuint type, - const GLvoid *indices, - GLuint *min_index, - GLuint *max_index) +void +vbo_get_minmax_index(GLcontext *ctx, + const struct _mesa_prim *prim, + const struct _mesa_index_buffer *ib, + GLuint *min_index, GLuint *max_index) { GLuint i; + GLsizei count = prim->count; + const void *indices; + + 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(type) { + switch (ib->type) { case GL_UNSIGNED_INT: { const GLuint *ui_indices = (const GLuint *)indices; GLuint max_ui = ui_indices[count-1]; @@ -86,12 +103,208 @@ static void get_minmax_index( GLuint count, GLuint type, 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. + */ +static void +check_array_data(GLcontext *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); + GLuint k; + for (k = 0; k < array->Size; k++) { + if (IS_INF_OR_NAN(f[k]) || + f[k] >= 1.0e20 || f[k] <= -1.0e10) { + _mesa_printf("Bad array data:\n"); + _mesa_printf(" Element[%u].%u = %f\n", j, k, f[k]); + _mesa_printf(" Array %u at %p\n", attrib, (void* ) array); + _mesa_printf(" Type 0x%x, Size %d, Stride %d\n", + array->Type, array->Size, array->Stride); + _mesa_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(GLcontext *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. + */ +static void +check_draw_elements_data(GLcontext *ctx, GLsizei count, GLenum elemType, + const void *elements) +{ + 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]); + } } -/* Just translate the arrayobj into a sane layout. +/** + * Check array data, looking for NaNs, etc. */ -static void bind_array_obj( GLcontext *ctx ) +static void +check_draw_arrays_data(GLcontext *ctx, GLint start, GLsizei count) +{ + /* TO DO */ +} + + +/** + * Print info/data for glDrawArrays(). + */ +static void +print_draw_arrays(GLcontext *ctx, struct vbo_exec_context *exec, + GLenum mode, GLint start, GLsizei count) +{ + int i; + + _mesa_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; + _mesa_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; + _mesa_printf(" Data at offset %d:\n", offset); + for (i = 0; i < n; i++) { + _mesa_printf(" float[%d] = 0x%08x %f\n", i, k[i], f[i]); + } + ctx->Driver.UnmapBuffer(ctx, GL_ARRAY_BUFFER_ARB, buf); + } + } +} + + +/** + * Just translate the arrayobj into a sane layout. + */ +static void +bind_array_obj(GLcontext *ctx) { struct vbo_context *vbo = vbo_context(ctx); struct vbo_exec_context *exec = &vbo->exec; @@ -103,7 +316,7 @@ static void bind_array_obj( GLcontext *ctx ) * go away. */ exec->array.legacy_array[VERT_ATTRIB_POS] = &arrayObj->Vertex; - exec->array.legacy_array[VERT_ATTRIB_WEIGHT] = &vbo->legacy_currval[VERT_ATTRIB_WEIGHT]; + 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; @@ -115,11 +328,10 @@ static void bind_array_obj( GLcontext *ctx ) } exec->array.legacy_array[VERT_ATTRIB_EDGEFLAG] = &arrayObj->EdgeFlag; - for (i = 0; i < MAX_TEXTURE_COORD_UNITS; i++) + for (i = 0; i < Elements(arrayObj->TexCoord); i++) exec->array.legacy_array[VERT_ATTRIB_TEX0 + i] = &arrayObj->TexCoord[i]; - for (i = 0; i < MAX_VERTEX_GENERIC_ATTRIBS; i++) { - assert(i < Elements(arrayObj->VertexAttrib)); + for (i = 0; i < Elements(arrayObj->VertexAttrib); i++) { assert(i < Elements(exec->array.generic_array)); exec->array.generic_array[i] = &arrayObj->VertexAttrib[i]; } @@ -127,7 +339,9 @@ static void bind_array_obj( GLcontext *ctx ) exec->array.array_obj = arrayObj->Name; } -static void recalculate_input_bindings( GLcontext *ctx ) + +static void +recalculate_input_bindings(GLcontext *ctx) { struct vbo_context *vbo = vbo_context(ctx); struct vbo_exec_context *exec = &vbo->exec; @@ -140,9 +354,10 @@ static void recalculate_input_bindings( GLcontext *ctx ) switch (exec->array.program_mode) { case VP_NONE: - /* When no vertex program is active, we put the material values - * into the generic slots. This is the only situation where - * material values are available as per-vertex attributes. + /* 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) @@ -165,8 +380,8 @@ static void recalculate_input_bindings( GLcontext *ctx ) inputs[VERT_ATTRIB_GENERIC0 + i] = &vbo->generic_currval[i]; const_inputs |= 1 << (VERT_ATTRIB_GENERIC0 + i); } - break; + case VP_NV: /* NV_vertex_program - attribute arrays alias and override * conventional, legacy arrays. No materials, and the generic @@ -190,11 +405,11 @@ static void recalculate_input_bindings( GLcontext *ctx ) inputs[i] = &vbo->generic_currval[i - VERT_ATTRIB_GENERIC0]; const_inputs |= 1 << i; } - break; + case VP_ARB: - /* ARB_vertex_program - Only the attribute zero (position) array - * aliases and overrides the legacy position array. + /* 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 @@ -209,7 +424,6 @@ static void recalculate_input_bindings( GLcontext *ctx ) 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]; @@ -234,7 +448,9 @@ static void recalculate_input_bindings( GLcontext *ctx ) _mesa_set_varying_vp_inputs( ctx, ~const_inputs ); } -static void bind_arrays( GLcontext *ctx ) + +static void +bind_arrays(GLcontext *ctx) { #if 0 if (ctx->Array.ArrayObj.Name != exec->array.array_obj) { @@ -274,14 +490,22 @@ vbo_exec_DrawArrays(GLenum mode, GLint start, GLsizei count) if (ctx->NewState) _mesa_update_state( ctx ); - if (!vbo_validate_shaders(ctx)) { - _mesa_error(ctx, GL_INVALID_OPERATION, "glDrawArrays(bad shader)"); + if (!_mesa_valid_to_render(ctx, "glDrawArrays")) { return; } +#if 0 + check_draw_arrays_data(ctx, start, count); +#else + (void) check_draw_arrays_data; +#endif + bind_arrays( ctx ); - /* Again... + /* 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 ); @@ -295,83 +519,102 @@ vbo_exec_DrawArrays(GLenum mode, GLint start, GLsizei count) prim[0].count = count; prim[0].indexed = 0; - vbo->draw_prims( ctx, exec->array.inputs, prim, 1, NULL, start, start + count - 1 ); + vbo->draw_prims( ctx, exec->array.inputs, prim, 1, NULL, + GL_TRUE, start, start + count - 1 ); #if 0 - { - int i; - - _mesa_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; - _mesa_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) 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; - _mesa_printf(" Data at offset %d:\n", offset); - for (i = 0; i < n; i++) { - _mesa_printf(" float[%d] = 0x%08x %f\n", i, k[i], f[i]); - } - ctx->Driver.UnmapBuffer(ctx, GL_ARRAY_BUFFER_ARB, buf); - } - } - } + print_draw_arrays(ctx, exec, mode, start, count); +#else + (void) print_draw_arrays; #endif } +/** + * Map GL_ELEMENT_ARRAY_BUFFER and print contents. + */ +static void +dump_element_buffer(GLcontext *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; + GLuint i; + for (i = 0; i < ctx->Array.ElementArrayBufferObj->Size; i++) { + _mesa_printf("%02x ", us[i]); + if (i % 32 == 31) + _mesa_printf("\n"); + } + _mesa_printf("\n"); + } + break; + case GL_UNSIGNED_SHORT: + { + const GLushort *us = (const GLushort *) map; + GLuint i; + for (i = 0; i < ctx->Array.ElementArrayBufferObj->Size / 2; i++) { + _mesa_printf("%04x ", us[i]); + if (i % 16 == 15) + _mesa_printf("\n"); + } + _mesa_printf("\n"); + } + break; + case GL_UNSIGNED_INT: + { + const GLuint *us = (const GLuint *) map; + GLuint i; + for (i = 0; i < ctx->Array.ElementArrayBufferObj->Size / 4; i++) { + _mesa_printf("%08x ", us[i]); + if (i % 8 == 7) + _mesa_printf("\n"); + } + _mesa_printf("\n"); + } + break; + default: + ; + } -static void GLAPIENTRY -vbo_exec_DrawRangeElements(GLenum mode, - GLuint start, GLuint end, - GLsizei count, GLenum type, const GLvoid *indices) + ctx->Driver.UnmapBuffer(ctx, + GL_ELEMENT_ARRAY_BUFFER_ARB, + ctx->Array.ElementArrayBufferObj); +} + +/* Inner support for both _mesa_DrawElements and _mesa_DrawRangeElements */ +static void +vbo_validated_drawrangeelements(GLcontext *ctx, GLenum mode, + GLboolean index_bounds_valid, + GLuint start, GLuint end, + GLsizei count, GLenum type, + const GLvoid *indices) { - GET_CURRENT_CONTEXT(ctx); struct vbo_context *vbo = vbo_context(ctx); struct vbo_exec_context *exec = &vbo->exec; struct _mesa_index_buffer ib; struct _mesa_prim prim[1]; - if (!_mesa_validate_DrawRangeElements( ctx, mode, start, end, count, type, indices )) - return; - FLUSH_CURRENT( ctx, 0 ); if (ctx->NewState) _mesa_update_state( ctx ); - if (!vbo_validate_shaders(ctx)) { - _mesa_error(ctx, GL_INVALID_OPERATION, "glDrawRangeElements(bad shader)"); + if (!_mesa_valid_to_render(ctx, "glDraw[Range]Elements")) { return; } - bind_arrays( ctx ); - if (ctx->NewState) _mesa_update_state( ctx ); + bind_arrays( ctx ); + ib.count = count; - ib.type = type; + ib.type = type; ib.obj = ctx->Array.ElementArrayBufferObj; ib.ptr = indices; @@ -415,66 +658,267 @@ vbo_exec_DrawRangeElements(GLenum mode, * for the latter case elsewhere. */ - vbo->draw_prims( ctx, exec->array.inputs, prim, 1, &ib, start, end ); + vbo->draw_prims( ctx, exec->array.inputs, prim, 1, &ib, + index_bounds_valid, start, end ); +} + +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_validate_DrawRangeElements( ctx, mode, start, end, count, + type, indices )) + return; + + if (end >= ctx->Array.ArrayObj->_MaxElement) { + /* the max element is out of bounds of one or more enabled arrays */ + _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, + 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. If so, warn + * and skip the draw to avoid potential segfault, etc. + */ + { + GLuint max = _mesa_max_buffer_index(ctx, count, type, indices, + ctx->Array.ElementArrayBufferObj); + if (max >= ctx->Array.ArrayObj->_MaxElement) { + _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, + ctx->Array.ElementArrayBufferObj->Size); + return; + } + /* 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 + } + else if (0) { + _mesa_printf("glDraw[Range]Elements" + "(start %u, end %u, type 0x%x, count %d) ElemBuf %u\n", + start, end, type, count, + ctx->Array.ElementArrayBufferObj->Name); + } + +#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); } + static void GLAPIENTRY -vbo_exec_DrawElements(GLenum mode, GLsizei count, GLenum type, const GLvoid *indices) +vbo_exec_DrawElements(GLenum mode, GLsizei count, GLenum type, + const GLvoid *indices) { GET_CURRENT_CONTEXT(ctx); - GLuint min_index = 0; - GLuint max_index = 0; if (!_mesa_validate_DrawElements( ctx, mode, count, type, indices )) return; - if (!vbo_validate_shaders(ctx)) { - _mesa_error(ctx, GL_INVALID_OPERATION, "glDrawElements(bad shader)"); + vbo_validated_drawrangeelements(ctx, mode, GL_FALSE, ~0, ~0, + count, type, indices); +} + +/* Inner support for both _mesa_DrawElements and _mesa_DrawRangeElements */ +static void +vbo_validated_multidrawelements(GLcontext *ctx, GLenum mode, + const GLsizei *count, GLenum type, + const GLvoid **indices, GLsizei primcount) +{ + 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 (ctx->NewState) + _mesa_update_state( ctx ); + + if (!_mesa_valid_to_render(ctx, "glMultiDrawElements")) { + return; + } + + if (ctx->NewState) + _mesa_update_state( ctx ); + + prim = _mesa_calloc(primcount * sizeof(*prim)); + if (prim == NULL) { + _mesa_error(ctx, GL_OUT_OF_MEMORY, "glMultiDrawElements"); return; } - if (ctx->Array.ElementArrayBufferObj->Name) { - const GLvoid *map = ctx->Driver.MapBuffer(ctx, - GL_ELEMENT_ARRAY_BUFFER_ARB, - GL_READ_ONLY, - ctx->Array.ElementArrayBufferObj); + /* 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 ); - get_minmax_index(count, type, ADD_POINTERS(map, indices), &min_index, &max_index); + 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); + } - ctx->Driver.UnmapBuffer(ctx, - GL_ELEMENT_ARRAY_BUFFER_ARB, - ctx->Array.ElementArrayBufferObj); + 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. + */ + 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; + } + } } - else { - get_minmax_index(count, type, indices, &min_index, &max_index); + + /* 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; + } + + vbo->draw_prims(ctx, exec->array.inputs, prim, primcount, &ib, + GL_FALSE, ~0, ~0); + } else { + 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; + } + + vbo->draw_prims(ctx, exec->array.inputs, prim, 1, &ib, + GL_FALSE, ~0, ~0); } + _mesa_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; - vbo_exec_DrawRangeElements(mode, min_index, max_index, count, type, indices); + ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx); + + for (i = 0; i < primcount; i++) { + if (!_mesa_validate_DrawElements( ctx, mode, count[i], type, indices[i] )) + return; + } + + vbo_validated_multidrawelements(ctx, mode, count, type, indices, primcount); } + /*********************************************************************** * Initialization */ - - - -void vbo_exec_array_init( struct vbo_exec_context *exec ) +void +vbo_exec_array_init( struct vbo_exec_context *exec ) { #if 1 exec->vtxfmt.DrawArrays = vbo_exec_DrawArrays; exec->vtxfmt.DrawElements = vbo_exec_DrawElements; exec->vtxfmt.DrawRangeElements = vbo_exec_DrawRangeElements; + exec->vtxfmt.MultiDrawElementsEXT = vbo_exec_MultiDrawElements; #else exec->vtxfmt.DrawArrays = _mesa_noop_DrawArrays; exec->vtxfmt.DrawElements = _mesa_noop_DrawElements; exec->vtxfmt.DrawRangeElements = _mesa_noop_DrawRangeElements; + exec->vtxfmt.MultiDrawElementsEXT = _mesa_noop_MultiDrawElements; #endif } -void vbo_exec_array_destroy( struct vbo_exec_context *exec ) +void +vbo_exec_array_destroy( struct vbo_exec_context *exec ) { /* nothing to do */ } @@ -504,3 +948,11 @@ _mesa_DrawRangeElements(GLenum mode, GLuint start, GLuint end, GLsizei count, { vbo_exec_DrawRangeElements(mode, start, end, count, type, indices); } + +/* GL_EXT_multi_draw_arrays */ +void GLAPIENTRY +_mesa_MultiDrawElementsEXT(GLenum mode, const GLsizei *count, GLenum type, + const GLvoid **indices, GLsizei primcount) +{ + vbo_exec_MultiDrawElements(mode, count, type, indices, primcount); +} |