/*
* 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 <keith@tungstengraphics.com>
*/
#include "main/imports.h"
#include "main/mtypes.h"
#include "main/api_arrayelt.h"
#include "main/bufferobj.h"
#include "math/m_eval.h"
#include "vbo.h"
#include "vbo_context.h"
#define NR_MAT_ATTRIBS 12
static GLuint check_size( const GLfloat *attr )
{
if (attr[3] != 1.0) return 4;
if (attr[2] != 0.0) return 3;
if (attr[1] != 0.0) return 2;
return 1;
}
static void init_legacy_currval(struct gl_context *ctx)
{
struct vbo_context *vbo = vbo_context(ctx);
struct gl_client_array *arrays = &vbo->currval[VBO_ATTRIB_POS];
GLuint i;
memset(arrays
, 0, sizeof(*arrays
) * VERT_ATTRIB_FF_MAX
);
/* Set up a constant (StrideB == 0) array for each current
* attribute:
*/
for (i = 0; i < VERT_ATTRIB_FF_MAX; i++) {
struct gl_client_array *cl = &arrays[i];
/* Size will have to be determined at runtime:
*/
cl->Size = check_size(ctx->Current.Attrib[i]);
cl->Stride = 0;
cl->StrideB = 0;
cl->Enabled = 1;
cl->Type = GL_FLOAT;
cl->Format = GL_RGBA;
cl->Ptr = (const void *)ctx->Current.Attrib[i];
cl->_ElementSize = cl->Size * sizeof(GLfloat);
_mesa_reference_buffer_object(ctx, &cl->BufferObj,
ctx->Shared->NullBufferObj);
}
}
static void init_generic_currval(struct gl_context *ctx)
{
struct vbo_context *vbo = vbo_context(ctx);
struct gl_client_array *arrays = &vbo->currval[VBO_ATTRIB_GENERIC0];
GLuint i;
memset(arrays
, 0, sizeof(*arrays
) * VERT_ATTRIB_GENERIC_MAX
);
for (i = 0; i < VERT_ATTRIB_GENERIC_MAX; i++) {
struct gl_client_array *cl = &arrays[i];
/* This will have to be determined at runtime:
*/
cl->Size = 1;
cl->Type = GL_FLOAT;
cl->Format = GL_RGBA;
cl->Ptr = (const void *)ctx->Current.Attrib[VERT_ATTRIB_GENERIC0 + i];
cl->Stride = 0;
cl->StrideB = 0;
cl->Enabled = 1;
cl->_ElementSize = cl->Size * sizeof(GLfloat);
_mesa_reference_buffer_object(ctx, &cl->BufferObj,
ctx->Shared->NullBufferObj);
}
}
static void init_mat_currval(struct gl_context *ctx)
{
struct vbo_context *vbo = vbo_context(ctx);
struct gl_client_array *arrays =
&vbo->currval[VBO_ATTRIB_MAT_FRONT_AMBIENT];
GLuint i;
ASSERT(NR_MAT_ATTRIBS == MAT_ATTRIB_MAX);
memset(arrays
, 0, sizeof(*arrays
) * NR_MAT_ATTRIBS
);
/* Set up a constant (StrideB == 0) array for each current
* attribute:
*/
for (i = 0; i < NR_MAT_ATTRIBS; i++) {
struct gl_client_array *cl = &arrays[i];
/* Size is fixed for the material attributes, for others will
* be determined at runtime:
*/
switch (i - VERT_ATTRIB_GENERIC0) {
case MAT_ATTRIB_FRONT_SHININESS:
case MAT_ATTRIB_BACK_SHININESS:
cl->Size = 1;
break;
case MAT_ATTRIB_FRONT_INDEXES:
case MAT_ATTRIB_BACK_INDEXES:
cl->Size = 3;
break;
default:
cl->Size = 4;
break;
}
cl->Ptr = (const void *)ctx->Light.Material.Attrib[i];
cl->Type = GL_FLOAT;
cl->Format = GL_RGBA;
cl->Stride = 0;
cl->StrideB = 0;
cl->Enabled = 1;
cl->_ElementSize = cl->Size * sizeof(GLfloat);
_mesa_reference_buffer_object(ctx, &cl->BufferObj,
ctx->Shared->NullBufferObj);
}
}
GLboolean _vbo_CreateContext( struct gl_context *ctx )
{
struct vbo_context *vbo = CALLOC_STRUCT(vbo_context);
ctx->swtnl_im = (void *)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 );
/* Build mappings from VERT_ATTRIB -> VBO_ATTRIB depending on type
* of vertex program active.
*/
{
GLuint i;
/* identity mapping */
for (i = 0; i < Elements(vbo->map_vp_none); i++)
vbo->map_vp_none[i] = i;
/* map material attribs to generic slots */
for (i = 0; i < NR_MAT_ATTRIBS; i++)
vbo->map_vp_none[VERT_ATTRIB_GENERIC(i)]
= VBO_ATTRIB_MAT_FRONT_AMBIENT + i;
for (i = 0; i < Elements(vbo->map_vp_arb); i++)
vbo->map_vp_arb[i] = i;
}
/* 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_InvalidateState( struct gl_context *ctx, GLuint new_state )
{
vbo_exec_invalidate_state(ctx, new_state);
}
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);
ctx->swtnl_im = 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;
}