| 0,0 → 1,535 |
|---|
| /* |
| * Mesa 3-D graphics library |
| * |
| * Copyright (C) 1999-2007 Brian Paul All Rights Reserved. |
| * |
| * Permission is hereby granted, free of charge, to any person obtaining a |
| * copy of this software and associated documentation files (the "Software"), |
| * to deal in the Software without restriction, including without limitation |
| * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
| * and/or sell copies of the Software, and to permit persons to whom the |
| * Software is furnished to do so, subject to the following conditions: |
| * |
| * The above copyright notice and this permission notice shall be included |
| * in all copies or substantial portions of the Software. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS |
| * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR |
| * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, |
| * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR |
| * OTHER DEALINGS IN THE SOFTWARE. |
| * |
| * Authors: |
| * Keith Whitwell <keith@tungstengraphics.com> |
| */ |
| |
| #include "main/glheader.h" |
| #include "main/bufferobj.h" |
| #include "main/condrender.h" |
| #include "main/context.h" |
| #include "main/imports.h" |
| #include "main/mtypes.h" |
| #include "main/macros.h" |
| #include "main/enums.h" |
| |
| #include "t_context.h" |
| #include "tnl.h" |
| |
| |
| |
| static GLubyte *get_space(struct gl_context *ctx, GLuint bytes) |
| { |
| TNLcontext *tnl = TNL_CONTEXT(ctx); |
| GLubyte *space = malloc(bytes); |
| |
| tnl->block[tnl->nr_blocks++] = space; |
| return space; |
| } |
| |
| |
| static void free_space(struct gl_context *ctx) |
| { |
| TNLcontext *tnl = TNL_CONTEXT(ctx); |
| GLuint i; |
| for (i = 0; i < tnl->nr_blocks; i++) |
| free(tnl->block[i]); |
| tnl->nr_blocks = 0; |
| } |
| |
| |
| /* Convert the incoming array to GLfloats. Understands the |
| * array->Normalized flag and selects the correct conversion method. |
| */ |
| #define CONVERT( TYPE, MACRO ) do { \ |
| GLuint i, j; \ |
| if (input->Normalized) { \ |
| for (i = 0; i < count; i++) { \ |
| const TYPE *in = (TYPE *)ptr; \ |
| for (j = 0; j < sz; j++) { \ |
| *fptr++ = MACRO(*in); \ |
| in++; \ |
| } \ |
| ptr += input->StrideB; \ |
| } \ |
| } else { \ |
| for (i = 0; i < count; i++) { \ |
| const TYPE *in = (TYPE *)ptr; \ |
| for (j = 0; j < sz; j++) { \ |
| *fptr++ = (GLfloat)(*in); \ |
| in++; \ |
| } \ |
| ptr += input->StrideB; \ |
| } \ |
| } \ |
| } while (0) |
| |
| |
| /** |
| * Convert array of BGRA/GLubyte[4] values to RGBA/float[4] |
| * \param ptr input/ubyte array |
| * \param fptr output/float array |
| */ |
| static void |
| convert_bgra_to_float(const struct gl_client_array *input, |
| const GLubyte *ptr, GLfloat *fptr, |
| GLuint count ) |
| { |
| GLuint i; |
| assert(input->Normalized); |
| assert(input->Size == 4); |
| for (i = 0; i < count; i++) { |
| const GLubyte *in = (GLubyte *) ptr; /* in is in BGRA order */ |
| *fptr++ = UBYTE_TO_FLOAT(in[2]); /* red */ |
| *fptr++ = UBYTE_TO_FLOAT(in[1]); /* green */ |
| *fptr++ = UBYTE_TO_FLOAT(in[0]); /* blue */ |
| *fptr++ = UBYTE_TO_FLOAT(in[3]); /* alpha */ |
| ptr += input->StrideB; |
| } |
| } |
| |
| static void |
| convert_half_to_float(const struct gl_client_array *input, |
| const GLubyte *ptr, GLfloat *fptr, |
| GLuint count, GLuint sz) |
| { |
| GLuint i, j; |
| |
| for (i = 0; i < count; i++) { |
| GLhalfARB *in = (GLhalfARB *)ptr; |
| |
| for (j = 0; j < sz; j++) { |
| *fptr++ = _mesa_half_to_float(in[j]); |
| } |
| ptr += input->StrideB; |
| } |
| } |
| |
| /** |
| * \brief Convert fixed-point to floating-point. |
| * |
| * In OpenGL, a fixed-point number is a "signed 2's complement 16.16 scaled |
| * integer" (Table 2.2 of the OpenGL ES 2.0 spec). |
| * |
| * If the buffer has the \c normalized flag set, the formula |
| * \code normalize(x) := (2*x + 1) / (2^16 - 1) \endcode |
| * is used to map the fixed-point numbers into the range [-1, 1]. |
| */ |
| static void |
| convert_fixed_to_float(const struct gl_client_array *input, |
| const GLubyte *ptr, GLfloat *fptr, |
| GLuint count) |
| { |
| GLuint i; |
| GLint j; |
| const GLint size = input->Size; |
| |
| if (input->Normalized) { |
| for (i = 0; i < count; ++i) { |
| const GLfixed *in = (GLfixed *) ptr; |
| for (j = 0; j < size; ++j) { |
| *fptr++ = (GLfloat) (2 * in[j] + 1) / (GLfloat) ((1 << 16) - 1); |
| } |
| ptr += input->StrideB; |
| } |
| } else { |
| for (i = 0; i < count; ++i) { |
| const GLfixed *in = (GLfixed *) ptr; |
| for (j = 0; j < size; ++j) { |
| *fptr++ = in[j] / (GLfloat) (1 << 16); |
| } |
| ptr += input->StrideB; |
| } |
| } |
| } |
| |
| /* Adjust pointer to point at first requested element, convert to |
| * floating point, populate VB->AttribPtr[]. |
| */ |
| static void _tnl_import_array( struct gl_context *ctx, |
| GLuint attrib, |
| GLuint count, |
| const struct gl_client_array *input, |
| const GLubyte *ptr ) |
| { |
| TNLcontext *tnl = TNL_CONTEXT(ctx); |
| struct vertex_buffer *VB = &tnl->vb; |
| GLuint stride = input->StrideB; |
| |
| if (input->Type != GL_FLOAT) { |
| const GLuint sz = input->Size; |
| GLubyte *buf = get_space(ctx, count * sz * sizeof(GLfloat)); |
| GLfloat *fptr = (GLfloat *)buf; |
| |
| switch (input->Type) { |
| case GL_BYTE: |
| CONVERT(GLbyte, BYTE_TO_FLOAT); |
| break; |
| case GL_UNSIGNED_BYTE: |
| if (input->Format == GL_BGRA) { |
| /* See GL_EXT_vertex_array_bgra */ |
| convert_bgra_to_float(input, ptr, fptr, count); |
| } |
| else { |
| CONVERT(GLubyte, UBYTE_TO_FLOAT); |
| } |
| break; |
| case GL_SHORT: |
| CONVERT(GLshort, SHORT_TO_FLOAT); |
| break; |
| case GL_UNSIGNED_SHORT: |
| CONVERT(GLushort, USHORT_TO_FLOAT); |
| break; |
| case GL_INT: |
| CONVERT(GLint, INT_TO_FLOAT); |
| break; |
| case GL_UNSIGNED_INT: |
| CONVERT(GLuint, UINT_TO_FLOAT); |
| break; |
| case GL_DOUBLE: |
| CONVERT(GLdouble, (GLfloat)); |
| break; |
| case GL_HALF_FLOAT: |
| convert_half_to_float(input, ptr, fptr, count, sz); |
| break; |
| case GL_FIXED: |
| convert_fixed_to_float(input, ptr, fptr, count); |
| break; |
| default: |
| assert(0); |
| break; |
| } |
| |
| ptr = buf; |
| stride = sz * sizeof(GLfloat); |
| } |
| |
| VB->AttribPtr[attrib] = &tnl->tmp_inputs[attrib]; |
| VB->AttribPtr[attrib]->data = (GLfloat (*)[4])ptr; |
| VB->AttribPtr[attrib]->start = (GLfloat *)ptr; |
| VB->AttribPtr[attrib]->count = count; |
| VB->AttribPtr[attrib]->stride = stride; |
| VB->AttribPtr[attrib]->size = input->Size; |
| |
| /* This should die, but so should the whole GLvector4f concept: |
| */ |
| VB->AttribPtr[attrib]->flags = (((1<<input->Size)-1) | |
| VEC_NOT_WRITEABLE | |
| (stride == 4*sizeof(GLfloat) ? 0 : VEC_BAD_STRIDE)); |
| |
| VB->AttribPtr[attrib]->storage = NULL; |
| } |
| |
| #define CLIPVERTS ((6 + MAX_CLIP_PLANES) * 2) |
| |
| |
| static GLboolean *_tnl_import_edgeflag( struct gl_context *ctx, |
| const GLvector4f *input, |
| GLuint count) |
| { |
| const GLubyte *ptr = (const GLubyte *)input->data; |
| const GLuint stride = input->stride; |
| GLboolean *space = (GLboolean *)get_space(ctx, count + CLIPVERTS); |
| GLboolean *bptr = space; |
| GLuint i; |
| |
| for (i = 0; i < count; i++) { |
| *bptr++ = ((GLfloat *)ptr)[0] == 1.0; |
| ptr += stride; |
| } |
| |
| return space; |
| } |
| |
| |
| static void bind_inputs( struct gl_context *ctx, |
| const struct gl_client_array *inputs[], |
| GLint count, |
| struct gl_buffer_object **bo, |
| GLuint *nr_bo ) |
| { |
| TNLcontext *tnl = TNL_CONTEXT(ctx); |
| struct vertex_buffer *VB = &tnl->vb; |
| GLuint i; |
| |
| /* Map all the VBOs |
| */ |
| for (i = 0; i < VERT_ATTRIB_MAX; i++) { |
| const void *ptr; |
| |
| if (inputs[i]->BufferObj->Name) { |
| if (!inputs[i]->BufferObj->Pointer) { |
| bo[*nr_bo] = inputs[i]->BufferObj; |
| (*nr_bo)++; |
| ctx->Driver.MapBufferRange(ctx, 0, inputs[i]->BufferObj->Size, |
| GL_MAP_READ_BIT, |
| inputs[i]->BufferObj); |
| |
| assert(inputs[i]->BufferObj->Pointer); |
| } |
| |
| ptr = ADD_POINTERS(inputs[i]->BufferObj->Pointer, |
| inputs[i]->Ptr); |
| } |
| else |
| ptr = inputs[i]->Ptr; |
| |
| /* Just make sure the array is floating point, otherwise convert to |
| * temporary storage. |
| * |
| * XXX: remove the GLvector4f type at some stage and just use |
| * client arrays. |
| */ |
| _tnl_import_array(ctx, i, count, inputs[i], ptr); |
| } |
| |
| /* We process only the vertices between min & max index: |
| */ |
| VB->Count = count; |
| |
| /* These should perhaps be part of _TNL_ATTRIB_* */ |
| VB->BackfaceColorPtr = NULL; |
| VB->BackfaceIndexPtr = NULL; |
| VB->BackfaceSecondaryColorPtr = NULL; |
| |
| /* Clipping and drawing code still requires this to be a packed |
| * array of ubytes which can be written into. TODO: Fix and |
| * remove. |
| */ |
| if (ctx->Polygon.FrontMode != GL_FILL || |
| ctx->Polygon.BackMode != GL_FILL) |
| { |
| VB->EdgeFlag = _tnl_import_edgeflag( ctx, |
| VB->AttribPtr[_TNL_ATTRIB_EDGEFLAG], |
| VB->Count ); |
| } |
| else { |
| /* the data previously pointed to by EdgeFlag may have been freed */ |
| VB->EdgeFlag = NULL; |
| } |
| } |
| |
| |
| /* Translate indices to GLuints and store in VB->Elts. |
| */ |
| static void bind_indices( struct gl_context *ctx, |
| const struct _mesa_index_buffer *ib, |
| struct gl_buffer_object **bo, |
| GLuint *nr_bo) |
| { |
| TNLcontext *tnl = TNL_CONTEXT(ctx); |
| struct vertex_buffer *VB = &tnl->vb; |
| GLuint i; |
| const void *ptr; |
| |
| if (!ib) { |
| VB->Elts = NULL; |
| return; |
| } |
| |
| if (_mesa_is_bufferobj(ib->obj) && !_mesa_bufferobj_mapped(ib->obj)) { |
| /* if the buffer object isn't mapped yet, map it now */ |
| bo[*nr_bo] = ib->obj; |
| (*nr_bo)++; |
| ptr = ctx->Driver.MapBufferRange(ctx, (GLsizeiptr) ib->ptr, |
| ib->count * vbo_sizeof_ib_type(ib->type), |
| GL_MAP_READ_BIT, ib->obj); |
| assert(ib->obj->Pointer); |
| } else { |
| /* user-space elements, or buffer already mapped */ |
| ptr = ADD_POINTERS(ib->obj->Pointer, ib->ptr); |
| } |
| |
| if (ib->type == GL_UNSIGNED_INT && VB->Primitive[0].basevertex == 0) { |
| VB->Elts = (GLuint *) ptr; |
| } |
| else { |
| GLuint *elts = (GLuint *)get_space(ctx, ib->count * sizeof(GLuint)); |
| VB->Elts = elts; |
| |
| if (ib->type == GL_UNSIGNED_INT) { |
| const GLuint *in = (GLuint *)ptr; |
| for (i = 0; i < ib->count; i++) |
| *elts++ = (GLuint)(*in++) + VB->Primitive[0].basevertex; |
| } |
| else if (ib->type == GL_UNSIGNED_SHORT) { |
| const GLushort *in = (GLushort *)ptr; |
| for (i = 0; i < ib->count; i++) |
| *elts++ = (GLuint)(*in++) + VB->Primitive[0].basevertex; |
| } |
| else { |
| const GLubyte *in = (GLubyte *)ptr; |
| for (i = 0; i < ib->count; i++) |
| *elts++ = (GLuint)(*in++) + VB->Primitive[0].basevertex; |
| } |
| } |
| } |
| |
| static void bind_prims( struct gl_context *ctx, |
| const struct _mesa_prim *prim, |
| GLuint nr_prims ) |
| { |
| TNLcontext *tnl = TNL_CONTEXT(ctx); |
| struct vertex_buffer *VB = &tnl->vb; |
| |
| VB->Primitive = prim; |
| VB->PrimitiveCount = nr_prims; |
| } |
| |
| static void unmap_vbos( struct gl_context *ctx, |
| struct gl_buffer_object **bo, |
| GLuint nr_bo ) |
| { |
| GLuint i; |
| for (i = 0; i < nr_bo; i++) { |
| ctx->Driver.UnmapBuffer(ctx, bo[i]); |
| } |
| } |
| |
| |
| void _tnl_vbo_draw_prims(struct gl_context *ctx, |
| const struct _mesa_prim *prim, |
| GLuint nr_prims, |
| const struct _mesa_index_buffer *ib, |
| GLboolean index_bounds_valid, |
| GLuint min_index, |
| GLuint max_index, |
| struct gl_transform_feedback_object *tfb_vertcount) |
| { |
| const struct gl_client_array **arrays = ctx->Array._DrawArrays; |
| |
| if (!index_bounds_valid) |
| vbo_get_minmax_indices(ctx, prim, ib, &min_index, &max_index, nr_prims); |
| |
| _tnl_draw_prims(ctx, arrays, prim, nr_prims, ib, min_index, max_index); |
| } |
| |
| /* This is the main entrypoint into the slimmed-down software tnl |
| * module. In a regular swtnl driver, this can be plugged straight |
| * into the vbo->Driver.DrawPrims() callback. |
| */ |
| void _tnl_draw_prims( struct gl_context *ctx, |
| const struct gl_client_array *arrays[], |
| const struct _mesa_prim *prim, |
| GLuint nr_prims, |
| const struct _mesa_index_buffer *ib, |
| GLuint min_index, |
| GLuint max_index) |
| { |
| TNLcontext *tnl = TNL_CONTEXT(ctx); |
| const GLuint TEST_SPLIT = 0; |
| const GLint max = TEST_SPLIT ? 8 : tnl->vb.Size - MAX_CLIPPED_VERTICES; |
| GLint max_basevertex = prim->basevertex; |
| GLuint i; |
| |
| /* Mesa core state should have been validated already */ |
| assert(ctx->NewState == 0x0); |
| |
| if (!_mesa_check_conditional_render(ctx)) |
| return; /* don't draw */ |
| |
| for (i = 1; i < nr_prims; i++) |
| max_basevertex = MAX2(max_basevertex, prim[i].basevertex); |
| |
| if (0) |
| { |
| printf("%s %d..%d\n", __FUNCTION__, min_index, max_index); |
| for (i = 0; i < nr_prims; i++) |
| printf("prim %d: %s start %d count %d\n", i, |
| _mesa_lookup_enum_by_nr(prim[i].mode), |
| prim[i].start, |
| prim[i].count); |
| } |
| |
| if (min_index) { |
| /* We always translate away calls with min_index != 0. |
| */ |
| vbo_rebase_prims( ctx, arrays, prim, nr_prims, ib, |
| min_index, max_index, |
| _tnl_vbo_draw_prims ); |
| return; |
| } |
| else if ((GLint)max_index + max_basevertex > max) { |
| /* The software TNL pipeline has a fixed amount of storage for |
| * vertices and it is necessary to split incoming drawing commands |
| * if they exceed that limit. |
| */ |
| struct split_limits limits; |
| limits.max_verts = max; |
| limits.max_vb_size = ~0; |
| limits.max_indices = ~0; |
| |
| /* This will split the buffers one way or another and |
| * recursively call back into this function. |
| */ |
| vbo_split_prims( ctx, arrays, prim, nr_prims, ib, |
| 0, max_index + prim->basevertex, |
| _tnl_vbo_draw_prims, |
| &limits ); |
| } |
| else { |
| /* May need to map a vertex buffer object for every attribute plus |
| * one for the index buffer. |
| */ |
| struct gl_buffer_object *bo[VERT_ATTRIB_MAX + 1]; |
| GLuint nr_bo = 0; |
| GLuint inst; |
| |
| for (i = 0; i < nr_prims;) { |
| GLuint this_nr_prims; |
| |
| /* Our SW TNL pipeline doesn't handle basevertex yet, so bind_indices |
| * will rebase the elements to the basevertex, and we'll only |
| * emit strings of prims with the same basevertex in one draw call. |
| */ |
| for (this_nr_prims = 1; i + this_nr_prims < nr_prims; |
| this_nr_prims++) { |
| if (prim[i].basevertex != prim[i + this_nr_prims].basevertex) |
| break; |
| } |
| |
| assert(prim[i].num_instances > 0); |
| |
| /* Binding inputs may imply mapping some vertex buffer objects. |
| * They will need to be unmapped below. |
| */ |
| for (inst = 0; inst < prim[i].num_instances; inst++) { |
| |
| bind_prims(ctx, &prim[i], this_nr_prims); |
| bind_inputs(ctx, arrays, max_index + prim[i].basevertex + 1, |
| bo, &nr_bo); |
| bind_indices(ctx, ib, bo, &nr_bo); |
| |
| tnl->CurInstance = inst; |
| TNL_CONTEXT(ctx)->Driver.RunPipeline(ctx); |
| |
| unmap_vbos(ctx, bo, nr_bo); |
| free_space(ctx); |
| } |
| |
| i += this_nr_prims; |
| } |
| } |
| } |
| |