/* * Mesa 3-D graphics library * * Copyright (C) 1999-2005 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 <keithw@vmware.com> */ #include "main/mtypes.h" #include "main/bufferobj.h" #include "math/m_eval.h" #include "main/vtxfmt.h" #include "main/api_arrayelt.h" #include "vbo.h" #include "vbo_private.h" static GLuint check_size(const GLfloat *attr) { if (attr[3] != 1.0F) return 4; if (attr[2] != 0.0F) return 3; if (attr[1] != 0.0F) return 2; return 1; } /** * Helper for initializing a vertex array. */ static void init_array(struct gl_context *ctx, struct gl_vertex_array *array, unsigned size, const void *pointer) { memset(array, 0, sizeof(*array)); array->Size = size; array->Type = GL_FLOAT; array->Format = GL_RGBA; array->StrideB = 0; array->_ElementSize = array->Size * sizeof(GLfloat); array->Ptr = pointer; _mesa_reference_buffer_object(ctx, &array->BufferObj, ctx->Shared->NullBufferObj); } /** * Set up the vbo->currval arrays to point at the context's current * vertex attributes (with strides = 0). */ static void init_legacy_currval(struct gl_context *ctx) { struct vbo_context *vbo = vbo_context(ctx); GLuint i; /* Set up a constant (StrideB == 0) array for each current * attribute: */ for (i = 0; i < VERT_ATTRIB_FF_MAX; i++) { struct gl_vertex_array *array = &vbo->currval[VERT_ATTRIB_FF(i)]; init_array(ctx, array, check_size(ctx->Current.Attrib[i]), ctx->Current.Attrib[i]); } } static void init_generic_currval(struct gl_context *ctx) { struct vbo_context *vbo = vbo_context(ctx); GLuint i; for (i = 0; i < VERT_ATTRIB_GENERIC_MAX; i++) { struct gl_vertex_array *array = &vbo->currval[VBO_ATTRIB_GENERIC0 + i]; init_array(ctx, array, 1, ctx->Current.Attrib[VERT_ATTRIB_GENERIC0 + i]); } } static void init_mat_currval(struct gl_context *ctx) { struct vbo_context *vbo = vbo_context(ctx); GLuint i; /* Set up a constant (StrideB == 0) array for each current * attribute: */ for (i = 0; i < MAT_ATTRIB_MAX; i++) { struct gl_vertex_array *array = &vbo->currval[VBO_ATTRIB_MAT_FRONT_AMBIENT + i]; unsigned size; /* Size is fixed for the material attributes, for others will * be determined at runtime: */ switch (i) { case MAT_ATTRIB_FRONT_SHININESS: case MAT_ATTRIB_BACK_SHININESS: size = 1; break; case MAT_ATTRIB_FRONT_INDEXES: case MAT_ATTRIB_BACK_INDEXES: size = 3; break; default: size = 4; break; } init_array(ctx, array, size, ctx->Light.Material.Attrib[i]); } } /** * Fallback for when a driver does not call vbo_set_indirect_draw_func(). */ static void vbo_draw_indirect_prims(struct gl_context *ctx, GLuint mode, struct gl_buffer_object *indirect_buffer, 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 vbo_context *vbo = vbo_context(ctx); struct _mesa_prim *prim; GLsizei i; prim = calloc(draw_count, sizeof(*prim)); if (prim == NULL) { _mesa_error(ctx, GL_OUT_OF_MEMORY, "gl%sDraw%sIndirect%s", (draw_count > 1) ? "Multi" : "", ib ? "Elements" : "Arrays", indirect_buffer ? "CountARB" : ""); return; } prim[0].begin = 1; prim[draw_count - 1].end = 1; for (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_buffer == ctx->DrawIndirectBuffer); vbo->draw_prims(ctx, prim, draw_count, ib, false, 0, ~0, NULL, 0, indirect_buffer); free(prim); } void _vbo_install_exec_vtxfmt(struct gl_context *ctx) { struct vbo_context *vbo = vbo_context(ctx); _mesa_install_exec_vtxfmt(ctx, &vbo->exec.vtxfmt); } void vbo_exec_invalidate_state(struct gl_context *ctx) { struct vbo_context *vbo = vbo_context(ctx); struct vbo_exec_context *exec = &vbo->exec; if (ctx->NewState & (_NEW_PROGRAM | _NEW_ARRAY)) { if (!exec->validating) exec->array.recalculate_inputs = GL_TRUE; _ae_invalidate_state(ctx); } if (ctx->NewState & _NEW_EVAL) exec->eval.recalculate_maps = GL_TRUE; } GLboolean _vbo_CreateContext(struct gl_context *ctx) { struct vbo_context *vbo = CALLOC_STRUCT(vbo_context); ctx->vbo_context = vbo; /* Initialize the arrayelt helper */ if (!ctx->aelt_context && !_ae_create_context(ctx)) { return GL_FALSE; } init_legacy_currval(ctx); init_generic_currval(ctx); init_mat_currval(ctx); vbo_set_indirect_draw_func(ctx, vbo_draw_indirect_prims); /* make sure all VBO_ATTRIB_ values can fit in an unsigned byte */ STATIC_ASSERT(VBO_ATTRIB_MAX <= 255); /* Hook our functions into exec and compile dispatch tables. These * will pretty much be permanently installed, which means that the * vtxfmt mechanism can be removed now. */ vbo_exec_init(ctx); if (ctx->API == API_OPENGL_COMPAT) vbo_save_init(ctx); _math_init_eval(); return GL_TRUE; } void _vbo_DestroyContext(struct gl_context *ctx) { struct vbo_context *vbo = vbo_context(ctx); if (ctx->aelt_context) { _ae_destroy_context(ctx); ctx->aelt_context = NULL; } if (vbo) { GLuint i; for (i = 0; i < VBO_ATTRIB_MAX; i++) { _mesa_reference_buffer_object(ctx, &vbo->currval[i].BufferObj, NULL); } vbo_exec_destroy(ctx); if (ctx->API == API_OPENGL_COMPAT) vbo_save_destroy(ctx); free(vbo); ctx->vbo_context = NULL; } } void vbo_set_draw_func(struct gl_context *ctx, vbo_draw_func func) { struct vbo_context *vbo = vbo_context(ctx); vbo->draw_prims = func; } void vbo_set_indirect_draw_func(struct gl_context *ctx, vbo_indirect_draw_func func) { struct vbo_context *vbo = vbo_context(ctx); vbo->draw_indirect_prims = func; }