0,0 → 1,210 |
/* |
* Mesa 3-D graphics library |
* Version: 6.5.3 |
* |
* 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 |
* BRIAN PAUL 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/context.h" |
#include "main/imports.h" |
#include "main/mtypes.h" |
|
#include "t_context.h" |
#include "t_pipeline.h" |
#include "t_vp_build.h" |
#include "t_vertex.h" |
|
void _tnl_install_pipeline( struct gl_context *ctx, |
const struct tnl_pipeline_stage **stages ) |
{ |
TNLcontext *tnl = TNL_CONTEXT(ctx); |
GLuint i; |
|
tnl->pipeline.new_state = ~0; |
|
/* Create a writeable copy of each stage. |
*/ |
for (i = 0 ; i < MAX_PIPELINE_STAGES && stages[i] ; i++) { |
struct tnl_pipeline_stage *s = &tnl->pipeline.stages[i]; |
memcpy(s, stages[i], sizeof(*s)); |
if (s->create) |
s->create(ctx, s); |
} |
|
tnl->pipeline.nr_stages = i; |
} |
|
void _tnl_destroy_pipeline( struct gl_context *ctx ) |
{ |
TNLcontext *tnl = TNL_CONTEXT(ctx); |
GLuint i; |
|
for (i = 0 ; i < tnl->pipeline.nr_stages ; i++) { |
struct tnl_pipeline_stage *s = &tnl->pipeline.stages[i]; |
if (s->destroy) |
s->destroy(s); |
} |
|
tnl->pipeline.nr_stages = 0; |
} |
|
|
|
static GLuint check_input_changes( struct gl_context *ctx ) |
{ |
TNLcontext *tnl = TNL_CONTEXT(ctx); |
GLuint i; |
|
for (i = 0; i <= _TNL_LAST_MAT; i++) { |
if (tnl->vb.AttribPtr[i]->size != tnl->pipeline.last_attrib_size[i] || |
tnl->vb.AttribPtr[i]->stride != tnl->pipeline.last_attrib_stride[i]) { |
tnl->pipeline.last_attrib_size[i] = tnl->vb.AttribPtr[i]->size; |
tnl->pipeline.last_attrib_stride[i] = tnl->vb.AttribPtr[i]->stride; |
tnl->pipeline.input_changes |= 1<<i; |
} |
} |
|
return tnl->pipeline.input_changes; |
} |
|
|
static GLuint check_output_changes( struct gl_context *ctx ) |
{ |
#if 0 |
TNLcontext *tnl = TNL_CONTEXT(ctx); |
|
for (i = 0; i < VERT_RESULT_MAX; i++) { |
if (tnl->vb.ResultPtr[i]->size != tnl->last_result_size[i] || |
tnl->vb.ResultPtr[i]->stride != tnl->last_result_stride[i]) { |
tnl->last_result_size[i] = tnl->vb.ResultPtr[i]->size; |
tnl->last_result_stride[i] = tnl->vb.ResultPtr[i]->stride; |
tnl->pipeline.output_changes |= 1<<i; |
} |
} |
|
if (tnl->pipeline.output_changes) |
tnl->Driver.NotifyOutputChanges( ctx, tnl->pipeline.output_changes ); |
|
return tnl->pipeline.output_changes; |
#else |
return ~0; |
#endif |
} |
|
|
void _tnl_run_pipeline( struct gl_context *ctx ) |
{ |
TNLcontext *tnl = TNL_CONTEXT(ctx); |
unsigned short __tmp; |
GLuint i; |
|
if (!tnl->vb.Count) |
return; |
|
/* Check for changed input sizes or change in stride to/from zero |
* (ie const or non-const). |
*/ |
if (check_input_changes( ctx ) || tnl->pipeline.new_state) { |
if (ctx->VertexProgram._MaintainTnlProgram) |
_tnl_UpdateFixedFunctionProgram( ctx ); |
|
for (i = 0; i < tnl->pipeline.nr_stages ; i++) { |
struct tnl_pipeline_stage *s = &tnl->pipeline.stages[i]; |
if (s->validate) |
s->validate( ctx, s ); |
} |
|
tnl->pipeline.new_state = 0; |
tnl->pipeline.input_changes = 0; |
|
/* Pipeline can only change its output in response to either a |
* statechange or an input size/stride change. No other changes |
* are allowed. |
*/ |
if (check_output_changes( ctx )) |
_tnl_notify_pipeline_output_change( ctx ); |
} |
|
START_FAST_MATH(__tmp); |
|
for (i = 0; i < tnl->pipeline.nr_stages ; i++) { |
struct tnl_pipeline_stage *s = &tnl->pipeline.stages[i]; |
if (!s->run( ctx, s )) |
break; |
} |
|
END_FAST_MATH(__tmp); |
} |
|
|
|
/* The default pipeline. This is useful for software rasterizers, and |
* simple hardware rasterizers. For customization, I don't recommend |
* tampering with the internals of these stages in the way that |
* drivers did in Mesa 3.4. These stages are basically black boxes, |
* and should be left intact. |
* |
* To customize the pipeline, consider: |
* |
* - removing redundant stages (making sure that the software rasterizer |
* can cope with this on fallback paths). An example is fog |
* coordinate generation, which is not required in the FX driver. |
* |
* - replacing general-purpose machine-independent stages with |
* general-purpose machine-specific stages. There is no example of |
* this to date, though it must be borne in mind that all subsequent |
* stages that reference the output of the new stage must cope with |
* any machine-specific data introduced. This may not be easy |
* unless there are no such stages (ie the new stage is the last in |
* the pipe). |
* |
* - inserting optimized (but specialized) stages ahead of the |
* general-purpose fallback implementation. For example, the old |
* fastpath mechanism, which only works when the VB->Elts input is |
* available, can be duplicated by placing the fastpath stage at the |
* head of this pipeline. Such specialized stages are currently |
* constrained to have no outputs (ie. they must either finish the * |
* pipeline by returning GL_FALSE from run(), or do nothing). |
* |
* Some work can be done to lift some of the restrictions in the final |
* case, if it becomes necessary to do so. |
*/ |
const struct tnl_pipeline_stage *_tnl_default_pipeline[] = { |
&_tnl_vertex_transform_stage, |
&_tnl_normal_transform_stage, |
&_tnl_lighting_stage, |
&_tnl_texgen_stage, |
&_tnl_texture_transform_stage, |
&_tnl_point_attenuation_stage, |
&_tnl_vertex_program_stage, |
&_tnl_fog_coordinate_stage, |
&_tnl_render_stage, |
NULL |
}; |
|
const struct tnl_pipeline_stage *_tnl_vp_pipeline[] = { |
&_tnl_vertex_program_stage, |
&_tnl_render_stage, |
NULL |
}; |