/************************************************************************** * * Copyright 2003 VMware, Inc. * 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 VMWARE 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 #include "arrayobj.h" #include "glheader.h" #include "c99_alloca.h" #include "context.h" #include "state.h" #include "draw.h" #include "draw_validate.h" #include "dispatch.h" #include "varray.h" #include "bufferobj.h" #include "enums.h" #include "macros.h" #include "transformfeedback.h" typedef struct { GLuint count; GLuint primCount; GLuint first; GLuint baseInstance; } DrawArraysIndirectCommand; typedef struct { GLuint count; GLuint primCount; GLuint firstIndex; GLint baseVertex; GLuint baseInstance; } DrawElementsIndirectCommand; /** * 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_vertex_array_object *vao, GLuint attrib, GLuint j) { const struct gl_array_attributes *array = &vao->VertexAttrib[attrib]; if (vao->Enabled & VERT_BIT(attrib)) { const struct gl_vertex_buffer_binding *binding = &vao->BufferBinding[array->BufferBindingIndex]; struct gl_buffer_object *bo = binding->BufferObj; const void *data = array->Ptr; if (_mesa_is_bufferobj(bo)) { data = ADD_POINTERS(_mesa_vertex_attrib_address(array, binding), bo->Mappings[MAP_INTERNAL].Pointer); } switch (array->Format.Type) { case GL_FLOAT: { GLfloat *f = (GLfloat *) ((GLubyte *) data + binding->Stride * j); GLint k; for (k = 0; k < array->Format.Size; k++) { if (IS_INF_OR_NAN(f[k]) || f[k] >= 1.0e20F || f[k] <= -1.0e10F) { 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->Format.Type, array->Format.Size, binding->Stride); printf(" Address/offset %p in Buffer Object %u\n", array->Ptr, bo->Name); f[k] = 1.0F; /* XXX replace the bad value! */ } /*assert(!IS_INF_OR_NAN(f[k])); */ } } break; default: ; } } } static inline int sizeof_ib_type(GLenum type) { switch (type) { case GL_UNSIGNED_INT: return sizeof(GLuint); case GL_UNSIGNED_SHORT: return sizeof(GLushort); case GL_UNSIGNED_BYTE: return sizeof(GLubyte); default: assert(!"unsupported index data type"); /* In case assert is turned off */ return 0; } } /** * 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_vertex_array_object *vao = ctx->Array.VAO; GLint i; GLuint k; _mesa_vao_map(ctx, vao, GL_MAP_READ_BIT); if (_mesa_is_bufferobj(vao->IndexBufferObj)) elements = ADD_POINTERS(vao->IndexBufferObj->Mappings[MAP_INTERNAL].Pointer, elements); 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: unreachable("Unexpected index buffer type"); } /* check element j of each enabled array */ for (k = 0; k < VERT_ATTRIB_MAX; k++) { check_array_data(ctx, vao, k, j); } } _mesa_vao_unmap(ctx, vao); } /** * Check array data, looking for NaNs, etc. */ static void check_draw_arrays_data(struct gl_context *ctx, GLint start, GLsizei count) { /* TO DO */ } /** * Check if we should skip the draw call even after validation was successful. */ static bool skip_validated_draw(struct gl_context *ctx) { switch (ctx->API) { case API_OPENGLES2: /* For ES2, we can draw if we have a vertex program/shader). */ return ctx->VertexProgram._Current == NULL; case API_OPENGLES: /* For OpenGL ES, only draw if we have vertex positions */ if (!(ctx->Array.VAO->Enabled & VERT_BIT_POS)) return true; break; case API_OPENGL_CORE: /* Section 7.3 (Program Objects) of the OpenGL 4.5 Core Profile spec * says: * * "If there is no active program for the vertex or fragment shader * stages, the results of vertex and/or fragment processing will be * undefined. However, this is not an error." * * The fragment shader is not tested here because other state (e.g., * GL_RASTERIZER_DISCARD) affects whether or not we actually care. */ return ctx->VertexProgram._Current == NULL; case API_OPENGL_COMPAT: if (ctx->VertexProgram._Current != NULL) { /* Draw regardless of whether or not we have any vertex arrays. * (Ex: could draw a point using a constant vertex pos) */ return false; } else { /* Draw if we have vertex positions (GL_VERTEX_ARRAY or generic * array [0]). */ return !(ctx->Array.VAO->Enabled & (VERT_BIT_POS|VERT_BIT_GENERIC0)); } break; default: unreachable("Invalid API value in check_valid_to_render()"); } return false; } /** * Print info/data for glDrawArrays(), for debugging. */ static void print_draw_arrays(struct gl_context *ctx, GLenum mode, GLint start, GLsizei count) { struct gl_vertex_array_object *vao = ctx->Array.VAO; printf("_mesa_DrawArrays(mode 0x%x, start %d, count %d):\n", mode, start, count); _mesa_vao_map_arrays(ctx, vao, GL_MAP_READ_BIT); GLbitfield mask = vao->Enabled; while (mask) { const gl_vert_attrib i = u_bit_scan(&mask); const struct gl_array_attributes *array = &vao->VertexAttrib[i]; const struct gl_vertex_buffer_binding *binding = &vao->BufferBinding[array->BufferBindingIndex]; struct gl_buffer_object *bufObj = binding->BufferObj; printf("attr %s: size %d stride %d " "ptr %p Bufobj %u\n", gl_vert_attrib_name((gl_vert_attrib) i), array->Format.Size, binding->Stride, array->Ptr, bufObj->Name); if (_mesa_is_bufferobj(bufObj)) { GLubyte *p = bufObj->Mappings[MAP_INTERNAL].Pointer; int offset = (int) (GLintptr) _mesa_vertex_attrib_address(array, binding); unsigned multiplier; switch (array->Format.Type) { case GL_DOUBLE: case GL_INT64_ARB: case GL_UNSIGNED_INT64_ARB: multiplier = 2; break; default: multiplier = 1; } float *f = (float *) (p + offset); int *k = (int *) f; int i = 0; int n = (count - 1) * (binding->Stride / (4 * multiplier)) + array->Format.Size; if (n > 32) n = 32; printf(" Data at offset %d:\n", offset); do { if (multiplier == 2) printf(" double[%d] = 0x%016llx %lf\n", i, ((unsigned long long *) k)[i], ((double *) f)[i]); else printf(" float[%d] = 0x%08x %f\n", i, k[i], f[i]); i++; } while (i < n); } } _mesa_vao_unmap_arrays(ctx, vao); } /** * Return a filter mask for the net enabled vao arrays. * This is to mask out arrays that would otherwise supersed required current * values for the fixed function shaders for example. */ static GLbitfield enabled_filter(const struct gl_context *ctx) { switch (ctx->VertexProgram._VPMode) { case VP_MODE_FF: /* 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. Since the vao has no material arrays, mute these * slots from the enabled arrays so that the current material values * are pulled instead of the vao arrays. */ return VERT_BIT_FF_ALL; case VP_MODE_SHADER: /* There are no shaders in OpenGL ES 1.x, so this code path should be * impossible to reach. The meta code is careful to not use shaders in * ES1. */ assert(ctx->API != API_OPENGLES); /* Other parts of the code assume that inputs[VERT_ATTRIB_POS] through * inputs[VERT_ATTRIB_FF_MAX] will be non-NULL. However, in OpenGL * ES 2.0+ or OpenGL core profile, none of these arrays should ever * be enabled. */ if (ctx->API != API_OPENGL_COMPAT) return VERT_BIT_GENERIC_ALL; return VERT_BIT_ALL; default: assert(0); return 0; } } /** * 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 _mesa_draw_arrays(struct gl_context *ctx, GLenum mode, GLint start, GLsizei count, GLuint numInstances, GLuint baseInstance, GLuint drawID) { struct _mesa_prim prim; if (skip_validated_draw(ctx)) return; /* OpenGL 4.5 says that primitive restart is ignored with non-indexed * draws. */ memset(&prim, 0, sizeof(prim)); prim.begin = 1; prim.end = 1; prim.mode = mode; prim.num_instances = numInstances; prim.base_instance = baseInstance; prim.draw_id = drawID; prim.is_indirect = 0; prim.start = start; prim.count = count; ctx->Driver.Draw(ctx, &prim, 1, NULL, GL_TRUE, start, start + count - 1, NULL, 0, NULL); if (MESA_DEBUG_FLAGS & DEBUG_ALWAYS_FLUSH) { _mesa_flush(ctx); } } /** * Execute a glRectf() function. */ static void GLAPIENTRY _mesa_exec_Rectf(GLfloat x1, GLfloat y1, GLfloat x2, GLfloat y2) { GET_CURRENT_CONTEXT(ctx); ASSERT_OUTSIDE_BEGIN_END(ctx); CALL_Begin(GET_DISPATCH(), (GL_QUADS)); CALL_Vertex2f(GET_DISPATCH(), (x1, y1)); CALL_Vertex2f(GET_DISPATCH(), (x2, y1)); CALL_Vertex2f(GET_DISPATCH(), (x2, y2)); CALL_Vertex2f(GET_DISPATCH(), (x1, y2)); CALL_End(GET_DISPATCH(), ()); } static void GLAPIENTRY _mesa_exec_EvalMesh1(GLenum mode, GLint i1, GLint i2) { GET_CURRENT_CONTEXT(ctx); GLint i; GLfloat u, du; GLenum prim; switch (mode) { case GL_POINT: prim = GL_POINTS; break; case GL_LINE: prim = GL_LINE_STRIP; break; default: _mesa_error(ctx, GL_INVALID_ENUM, "glEvalMesh1(mode)"); return; } /* No effect if vertex maps disabled. */ if (!ctx->Eval.Map1Vertex4 && !ctx->Eval.Map1Vertex3) return; du = ctx->Eval.MapGrid1du; u = ctx->Eval.MapGrid1u1 + i1 * du; CALL_Begin(GET_DISPATCH(), (prim)); for (i = i1; i <= i2; i++, u += du) { CALL_EvalCoord1f(GET_DISPATCH(), (u)); } CALL_End(GET_DISPATCH(), ()); } static void GLAPIENTRY _mesa_exec_EvalMesh2(GLenum mode, GLint i1, GLint i2, GLint j1, GLint j2) { GET_CURRENT_CONTEXT(ctx); GLfloat u, du, v, dv, v1, u1; GLint i, j; switch (mode) { case GL_POINT: case GL_LINE: case GL_FILL: break; default: _mesa_error(ctx, GL_INVALID_ENUM, "glEvalMesh2(mode)"); return; } /* No effect if vertex maps disabled. */ if (!ctx->Eval.Map2Vertex4 && !ctx->Eval.Map2Vertex3) return; du = ctx->Eval.MapGrid2du; dv = ctx->Eval.MapGrid2dv; v1 = ctx->Eval.MapGrid2v1 + j1 * dv; u1 = ctx->Eval.MapGrid2u1 + i1 * du; switch (mode) { case GL_POINT: CALL_Begin(GET_DISPATCH(), (GL_POINTS)); for (v = v1, j = j1; j <= j2; j++, v += dv) { for (u = u1, i = i1; i <= i2; i++, u += du) { CALL_EvalCoord2f(GET_DISPATCH(), (u, v)); } } CALL_End(GET_DISPATCH(), ()); break; case GL_LINE: for (v = v1, j = j1; j <= j2; j++, v += dv) { CALL_Begin(GET_DISPATCH(), (GL_LINE_STRIP)); for (u = u1, i = i1; i <= i2; i++, u += du) { CALL_EvalCoord2f(GET_DISPATCH(), (u, v)); } CALL_End(GET_DISPATCH(), ()); } for (u = u1, i = i1; i <= i2; i++, u += du) { CALL_Begin(GET_DISPATCH(), (GL_LINE_STRIP)); for (v = v1, j = j1; j <= j2; j++, v += dv) { CALL_EvalCoord2f(GET_DISPATCH(), (u, v)); } CALL_End(GET_DISPATCH(), ()); } break; case GL_FILL: for (v = v1, j = j1; j < j2; j++, v += dv) { CALL_Begin(GET_DISPATCH(), (GL_TRIANGLE_STRIP)); for (u = u1, i = i1; i <= i2; i++, u += du) { CALL_EvalCoord2f(GET_DISPATCH(), (u, v)); CALL_EvalCoord2f(GET_DISPATCH(), (u, v + dv)); } CALL_End(GET_DISPATCH(), ()); } break; } } /** * Called from glDrawArrays when in immediate mode (not display list mode). */ void GLAPIENTRY _mesa_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_enum_to_string(mode), start, count); FLUSH_FOR_DRAW(ctx); _mesa_set_draw_vao(ctx, ctx->Array.VAO, enabled_filter(ctx)); if (_mesa_is_no_error_enabled(ctx)) { if (ctx->NewState) _mesa_update_state(ctx); } else { if (!_mesa_validate_DrawArrays(ctx, mode, count)) return; } if (0) check_draw_arrays_data(ctx, start, count); _mesa_draw_arrays(ctx, mode, start, count, 1, 0, 0); if (0) print_draw_arrays(ctx, mode, start, count); } /** * Called from glDrawArraysInstanced when in immediate mode (not * display list mode). */ void GLAPIENTRY _mesa_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_enum_to_string(mode), start, count, numInstances); FLUSH_FOR_DRAW(ctx); _mesa_set_draw_vao(ctx, ctx->Array.VAO, enabled_filter(ctx)); if (_mesa_is_no_error_enabled(ctx)) { if (ctx->NewState) _mesa_update_state(ctx); } else { if (!_mesa_validate_DrawArraysInstanced(ctx, mode, start, count, numInstances)) return; } if (0) check_draw_arrays_data(ctx, start, count); _mesa_draw_arrays(ctx, mode, start, count, numInstances, 0, 0); if (0) print_draw_arrays(ctx, mode, start, count); } /** * Called from glDrawArraysInstancedBaseInstance when in immediate mode. */ static void GLAPIENTRY _mesa_exec_DrawArraysInstancedBaseInstance(GLenum mode, GLint first, GLsizei count, GLsizei numInstances, GLuint baseInstance) { GET_CURRENT_CONTEXT(ctx); if (MESA_VERBOSE & VERBOSE_DRAW) _mesa_debug(ctx, "glDrawArraysInstancedBaseInstance(%s, %d, %d, %d, %d)\n", _mesa_enum_to_string(mode), first, count, numInstances, baseInstance); FLUSH_FOR_DRAW(ctx); _mesa_set_draw_vao(ctx, ctx->Array.VAO, enabled_filter(ctx)); if (_mesa_is_no_error_enabled(ctx)) { if (ctx->NewState) _mesa_update_state(ctx); } else { if (!_mesa_validate_DrawArraysInstanced(ctx, mode, first, count, numInstances)) return; } if (0) check_draw_arrays_data(ctx, first, count); _mesa_draw_arrays(ctx, mode, first, count, numInstances, baseInstance, 0); if (0) print_draw_arrays(ctx, mode, first, count); } /** * Called from glMultiDrawArrays when in immediate mode. */ static void GLAPIENTRY _mesa_exec_MultiDrawArrays(GLenum mode, const GLint *first, const GLsizei *count, GLsizei primcount) { GET_CURRENT_CONTEXT(ctx); GLint i; if (MESA_VERBOSE & VERBOSE_DRAW) _mesa_debug(ctx, "glMultiDrawArrays(%s, %p, %p, %d)\n", _mesa_enum_to_string(mode), first, count, primcount); FLUSH_FOR_DRAW(ctx); _mesa_set_draw_vao(ctx, ctx->Array.VAO, enabled_filter(ctx)); if (_mesa_is_no_error_enabled(ctx)) { if (ctx->NewState) _mesa_update_state(ctx); } else { if (!_mesa_validate_MultiDrawArrays(ctx, mode, count, primcount)) return; } for (i = 0; i < primcount; i++) { if (count[i] > 0) { if (0) check_draw_arrays_data(ctx, first[i], count[i]); /* The GL_ARB_shader_draw_parameters spec adds the following after the * pseudo-code describing glMultiDrawArrays: * * "The index of the draw ( in the above pseudo-code) may be * read by a vertex shader as , as described in * Section 11.1.3.9." */ _mesa_draw_arrays(ctx, mode, first[i], count[i], 1, 0, i); if (0) print_draw_arrays(ctx, mode, first[i], count[i]); } } } /** * Map GL_ELEMENT_ARRAY_BUFFER and print contents. * For debugging. */ #if 0 static void dump_element_buffer(struct gl_context *ctx, GLenum type) { const GLvoid *map = ctx->Driver.MapBufferRange(ctx, 0, ctx->Array.VAO->IndexBufferObj->Size, GL_MAP_READ_BIT, ctx->Array.VAO->IndexBufferObj, MAP_INTERNAL); switch (type) { case GL_UNSIGNED_BYTE: { const GLubyte *us = (const GLubyte *) map; GLint i; for (i = 0; i < ctx->Array.VAO->IndexBufferObj->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.VAO->IndexBufferObj->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.VAO->IndexBufferObj->Size / 4; i++) { printf("%08x ", us[i]); if (i % 8 == 7) printf("\n"); } printf("\n"); } break; default: ; } ctx->Driver.UnmapBuffer(ctx, ctx->Array.VAO->IndexBufferObj, MAP_INTERNAL); } #endif static bool skip_draw_elements(struct gl_context *ctx, GLsizei count, const GLvoid *indices) { if (count == 0) return true; /* Not using a VBO for indices, so avoid NULL pointer derefs later. */ if (!_mesa_is_bufferobj(ctx->Array.VAO->IndexBufferObj) && indices == NULL) return true; if (skip_validated_draw(ctx)) return true; return false; } /** * 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 _mesa_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, GLuint numInstances, GLuint baseInstance) { struct _mesa_index_buffer ib; struct _mesa_prim prim; if (!index_bounds_valid) { assert(start == 0u); assert(end == ~0u); } if (skip_draw_elements(ctx, count, indices)) return; ib.count = count; ib.index_size = sizeof_ib_type(type); ib.obj = ctx->Array.VAO->IndexBufferObj; ib.ptr = indices; prim.begin = 1; prim.end = 1; prim.pad = 0; prim.mode = mode; prim.start = 0; prim.count = count; prim.indexed = 1; prim.is_indirect = 0; prim.basevertex = basevertex; prim.num_instances = numInstances; prim.base_instance = baseInstance; prim.draw_id = 0; /* 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. */ ctx->Driver.Draw(ctx, &prim, 1, &ib, index_bounds_valid, start, end, NULL, 0, NULL); if (MESA_DEBUG_FLAGS & DEBUG_ALWAYS_FLUSH) { _mesa_flush(ctx); } } /** * Called by glDrawRangeElementsBaseVertex() in immediate mode. */ void GLAPIENTRY _mesa_DrawRangeElementsBaseVertex(GLenum mode, GLuint start, GLuint end, GLsizei count, GLenum type, const GLvoid * indices, GLint basevertex) { static GLuint warnCount = 0; GLboolean index_bounds_valid = GL_TRUE; /* This is only useful to catch invalid values in the "end" parameter * like ~0. */ GLuint max_element = 2 * 1000 * 1000 * 1000; /* just a big number */ GET_CURRENT_CONTEXT(ctx); if (MESA_VERBOSE & VERBOSE_DRAW) _mesa_debug(ctx, "glDrawRangeElementsBaseVertex(%s, %u, %u, %d, %s, %p, %d)\n", _mesa_enum_to_string(mode), start, end, count, _mesa_enum_to_string(type), indices, basevertex); FLUSH_FOR_DRAW(ctx); _mesa_set_draw_vao(ctx, ctx->Array.VAO, enabled_filter(ctx)); if (_mesa_is_no_error_enabled(ctx)) { if (ctx->NewState) _mesa_update_state(ctx); } else { if (!_mesa_validate_DrawRangeElements(ctx, mode, start, end, count, type, indices)) return; } if ((int) end + basevertex < 0 || start + basevertex >= max_element) { /* The application requested we draw using a range of indices that's * outside the bounds of the current VBO. This is invalid and appears * to give undefined results. The safest thing to do is to simply * ignore the range, in case the application botched their range tracking * but did provide valid indices. Also issue a warning indicating that * the application is broken. */ if (warnCount++ < 10) { _mesa_warning(ctx, "glDrawRangeElements(start %u, end %u, " "basevertex %d, count %d, type 0x%x, indices=%p):\n" "\trange is outside VBO bounds (max=%u); ignoring.\n" "\tThis should be fixed in the application.", start, end, basevertex, count, type, indices, max_element - 1); } index_bounds_valid = GL_FALSE; } /* 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 (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.VAO->IndexBufferObj->Name, basevertex); } if ((int) start + basevertex < 0 || end + basevertex >= max_element) index_bounds_valid = GL_FALSE; #if 0 check_draw_elements_data(ctx, count, type, indices, basevertex); #else (void) check_draw_elements_data; #endif if (!index_bounds_valid) { start = 0; end = ~0; } _mesa_validated_drawrangeelements(ctx, mode, index_bounds_valid, start, end, count, type, indices, basevertex, 1, 0); } /** * Called by glDrawRangeElements() in immediate mode. */ void GLAPIENTRY _mesa_DrawRangeElements(GLenum mode, GLuint start, GLuint end, GLsizei count, GLenum type, const GLvoid * indices) { if (MESA_VERBOSE & VERBOSE_DRAW) { GET_CURRENT_CONTEXT(ctx); _mesa_debug(ctx, "glDrawRangeElements(%s, %u, %u, %d, %s, %p)\n", _mesa_enum_to_string(mode), start, end, count, _mesa_enum_to_string(type), indices); } _mesa_DrawRangeElementsBaseVertex(mode, start, end, count, type, indices, 0); } /** * Called by glDrawElements() in immediate mode. */ void GLAPIENTRY _mesa_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_enum_to_string(mode), count, _mesa_enum_to_string(type), indices); FLUSH_FOR_DRAW(ctx); _mesa_set_draw_vao(ctx, ctx->Array.VAO, enabled_filter(ctx)); if (_mesa_is_no_error_enabled(ctx)) { if (ctx->NewState) _mesa_update_state(ctx); } else { if (!_mesa_validate_DrawElements(ctx, mode, count, type, indices)) return; } _mesa_validated_drawrangeelements(ctx, mode, GL_FALSE, 0, ~0, count, type, indices, 0, 1, 0); } /** * Called by glDrawElementsBaseVertex() in immediate mode. */ void GLAPIENTRY _mesa_DrawElementsBaseVertex(GLenum mode, GLsizei count, GLenum type, const GLvoid * indices, GLint basevertex) { GET_CURRENT_CONTEXT(ctx); if (MESA_VERBOSE & VERBOSE_DRAW) _mesa_debug(ctx, "glDrawElements(%s, %u, %s, %p)\n", _mesa_enum_to_string(mode), count, _mesa_enum_to_string(type), indices); FLUSH_FOR_DRAW(ctx); _mesa_set_draw_vao(ctx, ctx->Array.VAO, enabled_filter(ctx)); if (_mesa_is_no_error_enabled(ctx)) { if (ctx->NewState) _mesa_update_state(ctx); } else { if (!_mesa_validate_DrawElements(ctx, mode, count, type, indices)) return; } _mesa_validated_drawrangeelements(ctx, mode, GL_FALSE, 0, ~0, count, type, indices, basevertex, 1, 0); } /** * Called by glDrawElementsInstanced() in immediate mode. */ static void GLAPIENTRY _mesa_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, "glDrawElements(%s, %u, %s, %p)\n", _mesa_enum_to_string(mode), count, _mesa_enum_to_string(type), indices); FLUSH_FOR_DRAW(ctx); _mesa_set_draw_vao(ctx, ctx->Array.VAO, enabled_filter(ctx)); if (_mesa_is_no_error_enabled(ctx)) { if (ctx->NewState) _mesa_update_state(ctx); } else { if (!_mesa_validate_DrawElementsInstanced(ctx, mode, count, type, indices, numInstances)) return; } _mesa_validated_drawrangeelements(ctx, mode, GL_FALSE, 0, ~0, count, type, indices, 0, numInstances, 0); } /** * Called by glDrawElementsInstancedBaseVertex() in immediate mode. */ static void GLAPIENTRY _mesa_exec_DrawElementsInstancedBaseVertex(GLenum mode, GLsizei count, GLenum type, const GLvoid * indices, GLsizei numInstances, GLint basevertex) { GET_CURRENT_CONTEXT(ctx); if (MESA_VERBOSE & VERBOSE_DRAW) _mesa_debug(ctx, "glDrawElementsInstancedBaseVertex" "(%s, %d, %s, %p, %d; %d)\n", _mesa_enum_to_string(mode), count, _mesa_enum_to_string(type), indices, numInstances, basevertex); FLUSH_FOR_DRAW(ctx); _mesa_set_draw_vao(ctx, ctx->Array.VAO, enabled_filter(ctx)); if (_mesa_is_no_error_enabled(ctx)) { if (ctx->NewState) _mesa_update_state(ctx); } else { if (!_mesa_validate_DrawElementsInstanced(ctx, mode, count, type, indices, numInstances)) return; } _mesa_validated_drawrangeelements(ctx, mode, GL_FALSE, 0, ~0, count, type, indices, basevertex, numInstances, 0); } /** * Called by glDrawElementsInstancedBaseInstance() in immediate mode. */ static void GLAPIENTRY _mesa_exec_DrawElementsInstancedBaseInstance(GLenum mode, GLsizei count, GLenum type, const GLvoid *indices, GLsizei numInstances, GLuint baseInstance) { GET_CURRENT_CONTEXT(ctx); if (MESA_VERBOSE & VERBOSE_DRAW) _mesa_debug(ctx, "glDrawElementsInstancedBaseInstance" "(%s, %d, %s, %p, %d, %d)\n", _mesa_enum_to_string(mode), count, _mesa_enum_to_string(type), indices, numInstances, baseInstance); FLUSH_FOR_DRAW(ctx); _mesa_set_draw_vao(ctx, ctx->Array.VAO, enabled_filter(ctx)); if (_mesa_is_no_error_enabled(ctx)) { if (ctx->NewState) _mesa_update_state(ctx); } else { if (!_mesa_validate_DrawElementsInstanced(ctx, mode, count, type, indices, numInstances)) return; } _mesa_validated_drawrangeelements(ctx, mode, GL_FALSE, 0, ~0, count, type, indices, 0, numInstances, baseInstance); } /** * Called by glDrawElementsInstancedBaseVertexBaseInstance() in immediate mode. */ static void GLAPIENTRY _mesa_exec_DrawElementsInstancedBaseVertexBaseInstance(GLenum mode, GLsizei count, GLenum type, const GLvoid *indices, GLsizei numInstances, GLint basevertex, GLuint baseInstance) { GET_CURRENT_CONTEXT(ctx); if (MESA_VERBOSE & VERBOSE_DRAW) _mesa_debug(ctx, "glDrawElementsInstancedBaseVertexBaseInstance" "(%s, %d, %s, %p, %d, %d, %d)\n", _mesa_enum_to_string(mode), count, _mesa_enum_to_string(type), indices, numInstances, basevertex, baseInstance); FLUSH_FOR_DRAW(ctx); _mesa_set_draw_vao(ctx, ctx->Array.VAO, enabled_filter(ctx)); if (_mesa_is_no_error_enabled(ctx)) { if (ctx->NewState) _mesa_update_state(ctx); } else { if (!_mesa_validate_DrawElementsInstanced(ctx, mode, count, type, indices, numInstances)) return; } _mesa_validated_drawrangeelements(ctx, mode, GL_FALSE, 0, ~0, count, type, indices, basevertex, numInstances, baseInstance); } /** * Inner support for both _mesa_MultiDrawElements() and * _mesa_MultiDrawRangeElements(). * This does the actual rendering after we've checked array indexes, etc. */ static void _mesa_validated_multidrawelements(struct gl_context *ctx, GLenum mode, const GLsizei *count, GLenum type, const GLvoid * const *indices, GLsizei primcount, const GLint *basevertex) { struct _mesa_index_buffer ib; struct _mesa_prim *prim; unsigned int index_type_size = sizeof_ib_type(type); uintptr_t min_index_ptr, max_index_ptr; GLboolean fallback = GL_FALSE; int i; if (primcount == 0) return; prim = calloc(primcount, sizeof(*prim)); if (prim == NULL) { _mesa_error(ctx, GL_OUT_OF_MEMORY, "glMultiDrawElements"); return; } 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; } } } /* Draw primitives individually if one count is zero, so we can easily skip * that primitive. */ for (i = 0; i < primcount; i++) { if (count[i] == 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.VAO->IndexBufferObj)) fallback = GL_TRUE; if (!fallback) { ib.count = (max_index_ptr - min_index_ptr) / index_type_size; ib.index_size = sizeof_ib_type(type); ib.obj = ctx->Array.VAO->IndexBufferObj; 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].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; prim[i].base_instance = 0; prim[i].draw_id = i; prim[i].is_indirect = 0; if (basevertex != NULL) prim[i].basevertex = basevertex[i]; else prim[i].basevertex = 0; } ctx->Driver.Draw(ctx, prim, primcount, &ib, false, 0, ~0, NULL, 0, NULL); } else { /* render one prim at a time */ for (i = 0; i < primcount; i++) { if (count[i] == 0) continue; ib.count = count[i]; ib.index_size = sizeof_ib_type(type); ib.obj = ctx->Array.VAO->IndexBufferObj; ib.ptr = indices[i]; prim[0].begin = 1; prim[0].end = 1; 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; prim[0].base_instance = 0; prim[0].draw_id = i; prim[0].is_indirect = 0; if (basevertex != NULL) prim[0].basevertex = basevertex[i]; else prim[0].basevertex = 0; ctx->Driver.Draw(ctx, prim, 1, &ib, false, 0, ~0, NULL, 0, NULL); } } free(prim); if (MESA_DEBUG_FLAGS & DEBUG_ALWAYS_FLUSH) { _mesa_flush(ctx); } } void GLAPIENTRY _mesa_MultiDrawElements(GLenum mode, const GLsizei *count, GLenum type, const GLvoid * const *indices, GLsizei primcount) { GET_CURRENT_CONTEXT(ctx); FLUSH_FOR_DRAW(ctx); _mesa_set_draw_vao(ctx, ctx->Array.VAO, enabled_filter(ctx)); if (!_mesa_validate_MultiDrawElements(ctx, mode, count, type, indices, primcount)) return; if (skip_validated_draw(ctx)) return; _mesa_validated_multidrawelements(ctx, mode, count, type, indices, primcount, NULL); } void GLAPIENTRY _mesa_MultiDrawElementsBaseVertex(GLenum mode, const GLsizei *count, GLenum type, const GLvoid * const *indices, GLsizei primcount, const GLsizei *basevertex) { GET_CURRENT_CONTEXT(ctx); FLUSH_FOR_DRAW(ctx); _mesa_set_draw_vao(ctx, ctx->Array.VAO, enabled_filter(ctx)); if (_mesa_is_no_error_enabled(ctx)) { if (ctx->NewState) _mesa_update_state(ctx); } else { if (!_mesa_validate_MultiDrawElements(ctx, mode, count, type, indices, primcount)) return; } if (skip_validated_draw(ctx)) return; _mesa_validated_multidrawelements(ctx, mode, count, type, indices, primcount, basevertex); } /** * Draw a GL primitive using a vertex count obtained from transform feedback. * \param mode the type of GL primitive to draw * \param obj the transform feedback object to use * \param stream index of the transform feedback stream from which to * get the primitive count. * \param numInstances number of instances to draw */ static void _mesa_draw_transform_feedback(struct gl_context *ctx, GLenum mode, struct gl_transform_feedback_object *obj, GLuint stream, GLuint numInstances) { struct _mesa_prim prim; FLUSH_FOR_DRAW(ctx); _mesa_set_draw_vao(ctx, ctx->Array.VAO, enabled_filter(ctx)); if (_mesa_is_no_error_enabled(ctx)) { if (ctx->NewState) _mesa_update_state(ctx); } else { if (!_mesa_validate_DrawTransformFeedback(ctx, mode, obj, stream, numInstances)) { return; } } if (ctx->Driver.GetTransformFeedbackVertexCount && (ctx->Const.AlwaysUseGetTransformFeedbackVertexCount || !_mesa_all_varyings_in_vbos(ctx->Array.VAO))) { GLsizei n = ctx->Driver.GetTransformFeedbackVertexCount(ctx, obj, stream); _mesa_draw_arrays(ctx, mode, 0, n, numInstances, 0, 0); return; } if (skip_validated_draw(ctx)) return; /* init most fields to zero */ memset(&prim, 0, sizeof(prim)); prim.begin = 1; prim.end = 1; prim.mode = mode; prim.num_instances = numInstances; prim.base_instance = 0; prim.is_indirect = 0; /* Maybe we should do some primitive splitting for primitive restart * (like in DrawArrays), but we have no way to know how many vertices * will be rendered. */ ctx->Driver.Draw(ctx, &prim, 1, NULL, GL_FALSE, 0, ~0, obj, stream, NULL); if (MESA_DEBUG_FLAGS & DEBUG_ALWAYS_FLUSH) { _mesa_flush(ctx); } } /** * Like DrawArrays, but take the count from a transform feedback object. * \param mode GL_POINTS, GL_LINES, GL_TRIANGLE_STRIP, etc. * \param name the transform feedback object * User still has to setup of the vertex attribute info with * glVertexPointer, glColorPointer, etc. * Part of GL_ARB_transform_feedback2. */ void GLAPIENTRY _mesa_DrawTransformFeedback(GLenum mode, GLuint name) { GET_CURRENT_CONTEXT(ctx); struct gl_transform_feedback_object *obj = _mesa_lookup_transform_feedback_object(ctx, name); if (MESA_VERBOSE & VERBOSE_DRAW) _mesa_debug(ctx, "glDrawTransformFeedback(%s, %d)\n", _mesa_enum_to_string(mode), name); _mesa_draw_transform_feedback(ctx, mode, obj, 0, 1); } static void GLAPIENTRY _mesa_exec_DrawTransformFeedbackStream(GLenum mode, GLuint name, GLuint stream) { GET_CURRENT_CONTEXT(ctx); struct gl_transform_feedback_object *obj = _mesa_lookup_transform_feedback_object(ctx, name); if (MESA_VERBOSE & VERBOSE_DRAW) _mesa_debug(ctx, "glDrawTransformFeedbackStream(%s, %u, %u)\n", _mesa_enum_to_string(mode), name, stream); _mesa_draw_transform_feedback(ctx, mode, obj, stream, 1); } static void GLAPIENTRY _mesa_exec_DrawTransformFeedbackInstanced(GLenum mode, GLuint name, GLsizei primcount) { GET_CURRENT_CONTEXT(ctx); struct gl_transform_feedback_object *obj = _mesa_lookup_transform_feedback_object(ctx, name); if (MESA_VERBOSE & VERBOSE_DRAW) _mesa_debug(ctx, "glDrawTransformFeedbackInstanced(%s, %d)\n", _mesa_enum_to_string(mode), name); _mesa_draw_transform_feedback(ctx, mode, obj, 0, primcount); } static void GLAPIENTRY _mesa_exec_DrawTransformFeedbackStreamInstanced(GLenum mode, GLuint name, GLuint stream, GLsizei primcount) { GET_CURRENT_CONTEXT(ctx); struct gl_transform_feedback_object *obj = _mesa_lookup_transform_feedback_object(ctx, name); if (MESA_VERBOSE & VERBOSE_DRAW) _mesa_debug(ctx, "glDrawTransformFeedbackStreamInstanced" "(%s, %u, %u, %i)\n", _mesa_enum_to_string(mode), name, stream, primcount); _mesa_draw_transform_feedback(ctx, mode, obj, stream, primcount); } static void _mesa_validated_drawarraysindirect(struct gl_context *ctx, GLenum mode, const GLvoid *indirect) { ctx->Driver.DrawIndirect(ctx, mode, ctx->DrawIndirectBuffer, (GLsizeiptr) indirect, 1 /* draw_count */ , 16 /* stride */ , NULL, 0, NULL); if (MESA_DEBUG_FLAGS & DEBUG_ALWAYS_FLUSH) _mesa_flush(ctx); } static void _mesa_validated_multidrawarraysindirect(struct gl_context *ctx, GLenum mode, const GLvoid *indirect, GLsizei primcount, GLsizei stride) { GLsizeiptr offset = (GLsizeiptr) indirect; if (primcount == 0) return; ctx->Driver.DrawIndirect(ctx, mode, ctx->DrawIndirectBuffer, offset, primcount, stride, NULL, 0, NULL); if (MESA_DEBUG_FLAGS & DEBUG_ALWAYS_FLUSH) _mesa_flush(ctx); } static void _mesa_validated_drawelementsindirect(struct gl_context *ctx, GLenum mode, GLenum type, const GLvoid *indirect) { struct _mesa_index_buffer ib; ib.count = 0; /* unknown */ ib.index_size = sizeof_ib_type(type); ib.obj = ctx->Array.VAO->IndexBufferObj; ib.ptr = NULL; ctx->Driver.DrawIndirect(ctx, mode, ctx->DrawIndirectBuffer, (GLsizeiptr) indirect, 1 /* draw_count */ , 20 /* stride */ , NULL, 0, &ib); if (MESA_DEBUG_FLAGS & DEBUG_ALWAYS_FLUSH) _mesa_flush(ctx); } static void _mesa_validated_multidrawelementsindirect(struct gl_context *ctx, GLenum mode, GLenum type, const GLvoid *indirect, GLsizei primcount, GLsizei stride) { struct _mesa_index_buffer ib; GLsizeiptr offset = (GLsizeiptr) indirect; if (primcount == 0) return; /* NOTE: IndexBufferObj is guaranteed to be a VBO. */ ib.count = 0; /* unknown */ ib.index_size = sizeof_ib_type(type); ib.obj = ctx->Array.VAO->IndexBufferObj; ib.ptr = NULL; ctx->Driver.DrawIndirect(ctx, mode, ctx->DrawIndirectBuffer, offset, primcount, stride, NULL, 0, &ib); if (MESA_DEBUG_FLAGS & DEBUG_ALWAYS_FLUSH) _mesa_flush(ctx); } /** * Like [Multi]DrawArrays/Elements, but they take most arguments from * a buffer object. */ static void GLAPIENTRY _mesa_exec_DrawArraysIndirect(GLenum mode, const GLvoid *indirect) { GET_CURRENT_CONTEXT(ctx); if (MESA_VERBOSE & VERBOSE_DRAW) _mesa_debug(ctx, "glDrawArraysIndirect(%s, %p)\n", _mesa_enum_to_string(mode), indirect); /* From the ARB_draw_indirect spec: * * "Initially zero is bound to DRAW_INDIRECT_BUFFER. In the * compatibility profile, this indicates that DrawArraysIndirect and * DrawElementsIndirect are to source their arguments directly from the * pointer passed as their parameters." */ if (ctx->API == API_OPENGL_COMPAT && !_mesa_is_bufferobj(ctx->DrawIndirectBuffer)) { DrawArraysIndirectCommand *cmd = (DrawArraysIndirectCommand *) indirect; _mesa_exec_DrawArraysInstancedBaseInstance(mode, cmd->first, cmd->count, cmd->primCount, cmd->baseInstance); return; } FLUSH_FOR_DRAW(ctx); _mesa_set_draw_vao(ctx, ctx->Array.VAO, enabled_filter(ctx)); if (_mesa_is_no_error_enabled(ctx)) { if (ctx->NewState) _mesa_update_state(ctx); } else { if (!_mesa_validate_DrawArraysIndirect(ctx, mode, indirect)) return; } if (skip_validated_draw(ctx)) return; _mesa_validated_drawarraysindirect(ctx, mode, indirect); } static void GLAPIENTRY _mesa_exec_DrawElementsIndirect(GLenum mode, GLenum type, const GLvoid *indirect) { GET_CURRENT_CONTEXT(ctx); if (MESA_VERBOSE & VERBOSE_DRAW) _mesa_debug(ctx, "glDrawElementsIndirect(%s, %s, %p)\n", _mesa_enum_to_string(mode), _mesa_enum_to_string(type), indirect); /* From the ARB_draw_indirect spec: * * "Initially zero is bound to DRAW_INDIRECT_BUFFER. In the * compatibility profile, this indicates that DrawArraysIndirect and * DrawElementsIndirect are to source their arguments directly from the * pointer passed as their parameters." */ if (ctx->API == API_OPENGL_COMPAT && !_mesa_is_bufferobj(ctx->DrawIndirectBuffer)) { /* * Unlike regular DrawElementsInstancedBaseVertex commands, the indices * may not come from a client array and must come from an index buffer. * If no element array buffer is bound, an INVALID_OPERATION error is * generated. */ if (!_mesa_is_bufferobj(ctx->Array.VAO->IndexBufferObj)) { _mesa_error(ctx, GL_INVALID_OPERATION, "glDrawElementsIndirect(no buffer bound " "to GL_ELEMENT_ARRAY_BUFFER)"); } else { DrawElementsIndirectCommand *cmd = (DrawElementsIndirectCommand *) indirect; /* Convert offset to pointer */ void *offset = (void *) ((cmd->firstIndex * _mesa_sizeof_type(type)) & 0xffffffffUL); _mesa_exec_DrawElementsInstancedBaseVertexBaseInstance(mode, cmd->count, type, offset, cmd->primCount, cmd->baseVertex, cmd->baseInstance); } return; } FLUSH_FOR_DRAW(ctx); _mesa_set_draw_vao(ctx, ctx->Array.VAO, enabled_filter(ctx)); if (_mesa_is_no_error_enabled(ctx)) { if (ctx->NewState) _mesa_update_state(ctx); } else { if (!_mesa_validate_DrawElementsIndirect(ctx, mode, type, indirect)) return; } if (skip_validated_draw(ctx)) return; _mesa_validated_drawelementsindirect(ctx, mode, type, indirect); } static void GLAPIENTRY _mesa_exec_MultiDrawArraysIndirect(GLenum mode, const GLvoid *indirect, GLsizei primcount, GLsizei stride) { GET_CURRENT_CONTEXT(ctx); if (MESA_VERBOSE & VERBOSE_DRAW) _mesa_debug(ctx, "glMultiDrawArraysIndirect(%s, %p, %i, %i)\n", _mesa_enum_to_string(mode), indirect, primcount, stride); /* If is zero, the array elements are treated as tightly packed. */ if (stride == 0) stride = sizeof(DrawArraysIndirectCommand); /* From the ARB_draw_indirect spec: * * "Initially zero is bound to DRAW_INDIRECT_BUFFER. In the * compatibility profile, this indicates that DrawArraysIndirect and * DrawElementsIndirect are to source their arguments directly from the * pointer passed as their parameters." */ if (ctx->API == API_OPENGL_COMPAT && !_mesa_is_bufferobj(ctx->DrawIndirectBuffer)) { if (!_mesa_valid_draw_indirect_multi(ctx, primcount, stride, "glMultiDrawArraysIndirect")) return; const ubyte *ptr = (const ubyte *) indirect; for (unsigned i = 0; i < primcount; i++) { DrawArraysIndirectCommand *cmd = (DrawArraysIndirectCommand *) ptr; _mesa_exec_DrawArraysInstancedBaseInstance(mode, cmd->first, cmd->count, cmd->primCount, cmd->baseInstance); if (stride == 0) { ptr += sizeof(DrawArraysIndirectCommand); } else { ptr += stride; } } return; } FLUSH_FOR_DRAW(ctx); _mesa_set_draw_vao(ctx, ctx->Array.VAO, enabled_filter(ctx)); if (_mesa_is_no_error_enabled(ctx)) { if (ctx->NewState) _mesa_update_state(ctx); } else { if (!_mesa_validate_MultiDrawArraysIndirect(ctx, mode, indirect, primcount, stride)) return; } if (skip_validated_draw(ctx)) return; _mesa_validated_multidrawarraysindirect(ctx, mode, indirect, primcount, stride); } static void GLAPIENTRY _mesa_exec_MultiDrawElementsIndirect(GLenum mode, GLenum type, const GLvoid *indirect, GLsizei primcount, GLsizei stride) { GET_CURRENT_CONTEXT(ctx); if (MESA_VERBOSE & VERBOSE_DRAW) _mesa_debug(ctx, "glMultiDrawElementsIndirect(%s, %s, %p, %i, %i)\n", _mesa_enum_to_string(mode), _mesa_enum_to_string(type), indirect, primcount, stride); /* If is zero, the array elements are treated as tightly packed. */ if (stride == 0) stride = sizeof(DrawElementsIndirectCommand); /* From the ARB_draw_indirect spec: * * "Initially zero is bound to DRAW_INDIRECT_BUFFER. In the * compatibility profile, this indicates that DrawArraysIndirect and * DrawElementsIndirect are to source their arguments directly from the * pointer passed as their parameters." */ if (ctx->API == API_OPENGL_COMPAT && !_mesa_is_bufferobj(ctx->DrawIndirectBuffer)) { /* * Unlike regular DrawElementsInstancedBaseVertex commands, the indices * may not come from a client array and must come from an index buffer. * If no element array buffer is bound, an INVALID_OPERATION error is * generated. */ if (!_mesa_is_bufferobj(ctx->Array.VAO->IndexBufferObj)) { _mesa_error(ctx, GL_INVALID_OPERATION, "glMultiDrawElementsIndirect(no buffer bound " "to GL_ELEMENT_ARRAY_BUFFER)"); return; } if (!_mesa_valid_draw_indirect_multi(ctx, primcount, stride, "glMultiDrawArraysIndirect")) return; const ubyte *ptr = (const ubyte *) indirect; for (unsigned i = 0; i < primcount; i++) { _mesa_exec_DrawElementsIndirect(mode, type, ptr); if (stride == 0) { ptr += sizeof(DrawElementsIndirectCommand); } else { ptr += stride; } } return; } FLUSH_FOR_DRAW(ctx); _mesa_set_draw_vao(ctx, ctx->Array.VAO, enabled_filter(ctx)); if (_mesa_is_no_error_enabled(ctx)) { if (ctx->NewState) _mesa_update_state(ctx); } else { if (!_mesa_validate_MultiDrawElementsIndirect(ctx, mode, type, indirect, primcount, stride)) return; } if (skip_validated_draw(ctx)) return; _mesa_validated_multidrawelementsindirect(ctx, mode, type, indirect, primcount, stride); } static void _mesa_validated_multidrawarraysindirectcount(struct gl_context *ctx, GLenum mode, GLintptr indirect, GLintptr drawcount_offset, GLsizei maxdrawcount, GLsizei stride) { GLsizeiptr offset = indirect; if (maxdrawcount == 0) return; ctx->Driver.DrawIndirect(ctx, mode, ctx->DrawIndirectBuffer, offset, maxdrawcount, stride, ctx->ParameterBuffer, drawcount_offset, NULL); if (MESA_DEBUG_FLAGS & DEBUG_ALWAYS_FLUSH) _mesa_flush(ctx); } static void _mesa_validated_multidrawelementsindirectcount(struct gl_context *ctx, GLenum mode, GLenum type, GLintptr indirect, GLintptr drawcount_offset, GLsizei maxdrawcount, GLsizei stride) { struct _mesa_index_buffer ib; GLsizeiptr offset = (GLsizeiptr) indirect; if (maxdrawcount == 0) return; /* NOTE: IndexBufferObj is guaranteed to be a VBO. */ ib.count = 0; /* unknown */ ib.index_size = sizeof_ib_type(type); ib.obj = ctx->Array.VAO->IndexBufferObj; ib.ptr = NULL; ctx->Driver.DrawIndirect(ctx, mode, ctx->DrawIndirectBuffer, offset, maxdrawcount, stride, ctx->ParameterBuffer, drawcount_offset, &ib); if (MESA_DEBUG_FLAGS & DEBUG_ALWAYS_FLUSH) _mesa_flush(ctx); } static void GLAPIENTRY _mesa_exec_MultiDrawArraysIndirectCount(GLenum mode, GLintptr indirect, GLintptr drawcount_offset, GLsizei maxdrawcount, GLsizei stride) { GET_CURRENT_CONTEXT(ctx); if (MESA_VERBOSE & VERBOSE_DRAW) _mesa_debug(ctx, "glMultiDrawArraysIndirectCountARB" "(%s, %lx, %lx, %i, %i)\n", _mesa_enum_to_string(mode), (unsigned long) indirect, (unsigned long) drawcount_offset, maxdrawcount, stride); /* If is zero, the array elements are treated as tightly packed. */ if (stride == 0) stride = 4 * sizeof(GLuint); /* sizeof(DrawArraysIndirectCommand) */ FLUSH_FOR_DRAW(ctx); _mesa_set_draw_vao(ctx, ctx->Array.VAO, enabled_filter(ctx)); if (_mesa_is_no_error_enabled(ctx)) { if (ctx->NewState) _mesa_update_state(ctx); } else { if (!_mesa_validate_MultiDrawArraysIndirectCount(ctx, mode, indirect, drawcount_offset, maxdrawcount, stride)) return; } if (skip_validated_draw(ctx)) return; _mesa_validated_multidrawarraysindirectcount(ctx, mode, indirect, drawcount_offset, maxdrawcount, stride); } static void GLAPIENTRY _mesa_exec_MultiDrawElementsIndirectCount(GLenum mode, GLenum type, GLintptr indirect, GLintptr drawcount_offset, GLsizei maxdrawcount, GLsizei stride) { GET_CURRENT_CONTEXT(ctx); if (MESA_VERBOSE & VERBOSE_DRAW) _mesa_debug(ctx, "glMultiDrawElementsIndirectCountARB" "(%s, %s, %lx, %lx, %i, %i)\n", _mesa_enum_to_string(mode), _mesa_enum_to_string(type), (unsigned long) indirect, (unsigned long) drawcount_offset, maxdrawcount, stride); /* If is zero, the array elements are treated as tightly packed. */ if (stride == 0) stride = 5 * sizeof(GLuint); /* sizeof(DrawElementsIndirectCommand) */ FLUSH_FOR_DRAW(ctx); _mesa_set_draw_vao(ctx, ctx->Array.VAO, enabled_filter(ctx)); if (_mesa_is_no_error_enabled(ctx)) { if (ctx->NewState) _mesa_update_state(ctx); } else { if (!_mesa_validate_MultiDrawElementsIndirectCount(ctx, mode, type, indirect, drawcount_offset, maxdrawcount, stride)) return; } if (skip_validated_draw(ctx)) return; _mesa_validated_multidrawelementsindirectcount(ctx, mode, type, indirect, drawcount_offset, maxdrawcount, stride); } /** * Initialize the dispatch table with the VBO functions for drawing. */ void _mesa_initialize_exec_dispatch(const struct gl_context *ctx, struct _glapi_table *exec) { SET_DrawArrays(exec, _mesa_DrawArrays); SET_DrawElements(exec, _mesa_DrawElements); if (_mesa_is_desktop_gl(ctx) || _mesa_is_gles3(ctx)) { SET_DrawRangeElements(exec, _mesa_DrawRangeElements); } SET_MultiDrawArrays(exec, _mesa_exec_MultiDrawArrays); SET_MultiDrawElementsEXT(exec, _mesa_MultiDrawElements); if (ctx->API == API_OPENGL_COMPAT) { SET_Rectf(exec, _mesa_exec_Rectf); SET_EvalMesh1(exec, _mesa_exec_EvalMesh1); SET_EvalMesh2(exec, _mesa_exec_EvalMesh2); } if (ctx->API != API_OPENGLES && ctx->Extensions.ARB_draw_elements_base_vertex) { SET_DrawElementsBaseVertex(exec, _mesa_DrawElementsBaseVertex); SET_MultiDrawElementsBaseVertex(exec, _mesa_MultiDrawElementsBaseVertex); if (_mesa_is_desktop_gl(ctx) || _mesa_is_gles3(ctx)) { SET_DrawRangeElementsBaseVertex(exec, _mesa_DrawRangeElementsBaseVertex); SET_DrawElementsInstancedBaseVertex(exec, _mesa_exec_DrawElementsInstancedBaseVertex); } } if (_mesa_is_desktop_gl(ctx) || _mesa_is_gles3(ctx)) { SET_DrawArraysInstancedBaseInstance(exec, _mesa_exec_DrawArraysInstancedBaseInstance); SET_DrawElementsInstancedBaseInstance(exec, _mesa_exec_DrawElementsInstancedBaseInstance); SET_DrawElementsInstancedBaseVertexBaseInstance(exec, _mesa_exec_DrawElementsInstancedBaseVertexBaseInstance); } if (_mesa_is_desktop_gl(ctx) || _mesa_is_gles31(ctx)) { SET_DrawArraysIndirect(exec, _mesa_exec_DrawArraysIndirect); SET_DrawElementsIndirect(exec, _mesa_exec_DrawElementsIndirect); } if (_mesa_is_desktop_gl(ctx) || _mesa_is_gles3(ctx)) { SET_DrawArraysInstancedARB(exec, _mesa_DrawArraysInstanced); SET_DrawElementsInstancedARB(exec, _mesa_exec_DrawElementsInstanced); } if (_mesa_is_desktop_gl(ctx)) { SET_DrawTransformFeedback(exec, _mesa_DrawTransformFeedback); SET_DrawTransformFeedbackStream(exec, _mesa_exec_DrawTransformFeedbackStream); SET_DrawTransformFeedbackInstanced(exec, _mesa_exec_DrawTransformFeedbackInstanced); SET_DrawTransformFeedbackStreamInstanced(exec, _mesa_exec_DrawTransformFeedbackStreamInstanced); SET_MultiDrawArraysIndirect(exec, _mesa_exec_MultiDrawArraysIndirect); SET_MultiDrawElementsIndirect(exec, _mesa_exec_MultiDrawElementsIndirect); SET_MultiDrawArraysIndirectCountARB(exec, _mesa_exec_MultiDrawArraysIndirectCount); SET_MultiDrawElementsIndirectCountARB(exec, _mesa_exec_MultiDrawElementsIndirectCount); } } /* GL_IBM_multimode_draw_arrays */ void GLAPIENTRY _mesa_MultiModeDrawArraysIBM( const GLenum * mode, const GLint * first, const GLsizei * count, GLsizei primcount, GLint modestride ) { GET_CURRENT_CONTEXT(ctx); GLint i; FLUSH_VERTICES(ctx, 0); for ( i = 0 ; i < primcount ; i++ ) { if ( count[i] > 0 ) { GLenum m = *((GLenum *) ((GLubyte *) mode + i * modestride)); CALL_DrawArrays(ctx->CurrentServerDispatch, ( m, first[i], count[i] )); } } } /* GL_IBM_multimode_draw_arrays */ void GLAPIENTRY _mesa_MultiModeDrawElementsIBM( const GLenum * mode, const GLsizei * count, GLenum type, const GLvoid * const * indices, GLsizei primcount, GLint modestride ) { GET_CURRENT_CONTEXT(ctx); GLint i; FLUSH_VERTICES(ctx, 0); /* XXX not sure about ARB_vertex_buffer_object handling here */ for ( i = 0 ; i < primcount ; i++ ) { if ( count[i] > 0 ) { GLenum m = *((GLenum *) ((GLubyte *) mode + i * modestride)); CALL_DrawElements(ctx->CurrentServerDispatch, ( m, count[i], type, indices[i] )); } } } /* * Helper function for _mesa_draw_indirect below that additionally takes a zero * initialized array of _mesa_prim scratch space memory as the last argument. */ static void draw_indirect(struct gl_context *ctx, GLuint mode, struct gl_buffer_object *indirect_data, GLsizeiptr indirect_offset, unsigned draw_count, unsigned stride, struct gl_buffer_object *indirect_draw_count_buffer, GLsizeiptr indirect_draw_count_offset, const struct _mesa_index_buffer *ib, struct _mesa_prim *prim) { prim[0].begin = 1; prim[draw_count - 1].end = 1; for (unsigned i = 0; i < draw_count; ++i, indirect_offset += stride) { prim[i].mode = mode; prim[i].indexed = !!ib; prim[i].indirect_offset = indirect_offset; prim[i].is_indirect = 1; prim[i].draw_id = i; } /* This should always be true at this time */ assert(indirect_data == ctx->DrawIndirectBuffer); ctx->Driver.Draw(ctx, prim, draw_count, ib, false, 0u, ~0u, NULL, 0, indirect_data); } /* * Function to be put into dd_function_table::DrawIndirect as fallback. * Calls into dd_function_table::Draw past adapting call arguments. * See dd_function_table::DrawIndirect for call argument documentation. */ void _mesa_draw_indirect(struct gl_context *ctx, GLuint mode, struct gl_buffer_object *indirect_data, GLsizeiptr indirect_offset, unsigned draw_count, unsigned stride, struct gl_buffer_object *indirect_draw_count_buffer, GLsizeiptr indirect_draw_count_offset, const struct _mesa_index_buffer *ib) { /* Use alloca for the prim space if we are somehow in bounds. */ if (draw_count*sizeof(struct _mesa_prim) < 1024) { struct _mesa_prim *space = alloca(draw_count*sizeof(struct _mesa_prim)); memset(space, 0, draw_count*sizeof(struct _mesa_prim)); draw_indirect(ctx, mode, indirect_data, indirect_offset, draw_count, stride, indirect_draw_count_buffer, indirect_draw_count_offset, ib, space); } else { struct _mesa_prim *space = calloc(draw_count, sizeof(struct _mesa_prim)); if (space == NULL) { _mesa_error(ctx, GL_OUT_OF_MEMORY, "gl%sDraw%sIndirect%s", (draw_count > 1) ? "Multi" : "", ib ? "Elements" : "Arrays", indirect_data ? "CountARB" : ""); return; } draw_indirect(ctx, mode, indirect_data, indirect_offset, draw_count, stride, indirect_draw_count_buffer, indirect_draw_count_offset, ib, space); free(space); } }