-/* $Id: t_pipeline.c,v 1.23 2002/10/16 17:57:52 brianp Exp $ */
-
/*
* Mesa 3-D graphics library
- * Version: 3.5
*
- * Copyright (C) 1999-2001 Brian Paul All Rights Reserved.
+ * 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"),
* 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.
+ * 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@valinux.com>
+ * Keith Whitwell <keithw@vmware.com>
*/
-#include "glheader.h"
-#include "context.h"
-#include "mem.h"
-#include "mmath.h"
-#include "state.h"
-#include "mtypes.h"
+#include "main/glheader.h"
+#include "main/context.h"
-#include "math/m_translate.h"
-#include "math/m_xform.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( GLcontext *ctx,
- const struct gl_pipeline_stage **stages )
+void _tnl_install_pipeline( struct gl_context *ctx,
+ const struct tnl_pipeline_stage **stages )
{
TNLcontext *tnl = TNL_CONTEXT(ctx);
- struct gl_pipeline *pipe = &tnl->pipeline;
GLuint i;
- ASSERT(pipe->nr_stages == 0);
-
- pipe->run_state_changes = ~0;
- pipe->run_input_changes = ~0;
- pipe->build_state_changes = ~0;
- pipe->build_state_trigger = 0;
- pipe->inputs = 0;
+ tnl->pipeline.new_state = ~0;
/* Create a writeable copy of each stage.
*/
for (i = 0 ; i < MAX_PIPELINE_STAGES && stages[i] ; i++) {
- MEMCPY( &pipe->stages[i], stages[i], sizeof( **stages ));
- pipe->build_state_trigger |= pipe->stages[i].check_state;
+ struct tnl_pipeline_stage *s = &tnl->pipeline.stages[i];
+ memcpy(s, stages[i], sizeof(*s));
+ if (s->create)
+ s->create(ctx, s);
}
- MEMSET( &pipe->stages[i], 0, sizeof( **stages ));
-
- pipe->nr_stages = i;
+ tnl->pipeline.nr_stages = i;
}
-void _tnl_destroy_pipeline( GLcontext *ctx )
+void _tnl_destroy_pipeline( struct gl_context *ctx )
{
TNLcontext *tnl = TNL_CONTEXT(ctx);
GLuint i;
- for (i = 0 ; i < tnl->pipeline.nr_stages ; i++)
- tnl->pipeline.stages[i].destroy( &tnl->pipeline.stages[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;
}
-/* TODO: merge validate with run.
- */
-void _tnl_validate_pipeline( GLcontext *ctx )
+
+
+static GLuint check_input_changes( struct gl_context *ctx )
{
TNLcontext *tnl = TNL_CONTEXT(ctx);
- struct gl_pipeline *pipe = &tnl->pipeline;
- struct gl_pipeline_stage *s = pipe->stages;
- GLuint newstate = pipe->build_state_changes;
- GLuint generated = 0;
- GLuint changed_inputs = 0;
-
- pipe->inputs = 0;
- pipe->build_state_changes = 0;
-
- for ( ; s->check ; s++) {
-
- s->changed_inputs |= s->inputs & changed_inputs;
-
- if (s->check_state & newstate) {
- if (s->active) {
- GLuint old_outputs = s->outputs;
- s->check(ctx, s);
- if (!s->active)
- changed_inputs |= old_outputs;
- }
- else
- s->check(ctx, s);
+ 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;
+}
- if (s->active) {
- pipe->inputs |= s->inputs & ~generated;
- generated |= s->outputs;
+
+static GLuint check_output_changes( struct gl_context *ctx )
+{
+#if 0
+ TNLcontext *tnl = TNL_CONTEXT(ctx);
+
+ for (i = 0; i < VARYING_SLOT_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
}
+/**
+ * START/END_FAST_MATH macros:
+ *
+ * START_FAST_MATH: Set x86 FPU to faster, 32-bit precision mode (and save
+ * original mode to a temporary).
+ * END_FAST_MATH: Restore x86 FPU to original mode.
+ */
+#if defined(__GNUC__) && defined(__i386__)
+/*
+ * Set the x86 FPU control word to guarentee only 32 bits of precision
+ * are stored in registers. Allowing the FPU to store more introduces
+ * differences between situations where numbers are pulled out of memory
+ * vs. situations where the compiler is able to optimize register usage.
+ *
+ * In the worst case, we force the compiler to use a memory access to
+ * truncate the float, by specifying the 'volatile' keyword.
+ */
+/* Hardware default: All exceptions masked, extended double precision,
+ * round to nearest (IEEE compliant):
+ */
+#define DEFAULT_X86_FPU 0x037f
+/* All exceptions masked, single precision, round to nearest:
+ */
+#define FAST_X86_FPU 0x003f
+/* The fldcw instruction will cause any pending FP exceptions to be
+ * raised prior to entering the block, and we clear any pending
+ * exceptions before exiting the block. Hence, asm code has free
+ * reign over the FPU while in the fast math block.
+ */
+#if defined(NO_FAST_MATH)
+#define START_FAST_MATH(x) \
+do { \
+ static GLuint mask = DEFAULT_X86_FPU; \
+ __asm__ ( "fnstcw %0" : "=m" (*&(x)) ); \
+ __asm__ ( "fldcw %0" : : "m" (mask) ); \
+} while (0)
+#else
+#define START_FAST_MATH(x) \
+do { \
+ static GLuint mask = FAST_X86_FPU; \
+ __asm__ ( "fnstcw %0" : "=m" (*&(x)) ); \
+ __asm__ ( "fldcw %0" : : "m" (mask) ); \
+} while (0)
+#endif
+/* Restore original FPU mode, and clear any exceptions that may have
+ * occurred in the FAST_MATH block.
+ */
+#define END_FAST_MATH(x) \
+do { \
+ __asm__ ( "fnclex ; fldcw %0" : : "m" (*&(x)) ); \
+} while (0)
+
+#elif defined(_MSC_VER) && defined(_M_IX86)
+#define DEFAULT_X86_FPU 0x037f /* See GCC comments above */
+#define FAST_X86_FPU 0x003f /* See GCC comments above */
+#if defined(NO_FAST_MATH)
+#define START_FAST_MATH(x) do {\
+ static GLuint mask = DEFAULT_X86_FPU;\
+ __asm fnstcw word ptr [x]\
+ __asm fldcw word ptr [mask]\
+} while(0)
+#else
+#define START_FAST_MATH(x) do {\
+ static GLuint mask = FAST_X86_FPU;\
+ __asm fnstcw word ptr [x]\
+ __asm fldcw word ptr [mask]\
+} while(0)
+#endif
+#define END_FAST_MATH(x) do {\
+ __asm fnclex\
+ __asm fldcw word ptr [x]\
+} while(0)
+
+#else
+#define START_FAST_MATH(x) x = 0
+#define END_FAST_MATH(x) (void)(x)
+#endif
-void _tnl_run_pipeline( GLcontext *ctx )
+void _tnl_run_pipeline( struct gl_context *ctx )
{
TNLcontext *tnl = TNL_CONTEXT(ctx);
- struct vertex_buffer *VB = &tnl->vb;
- struct gl_pipeline *pipe = &tnl->pipeline;
- struct gl_pipeline_stage *s = pipe->stages;
- GLuint changed_state = pipe->run_state_changes;
- GLuint changed_inputs = pipe->run_input_changes;
- GLboolean running = GL_TRUE;
unsigned short __tmp;
+ GLuint i;
- pipe->run_state_changes = 0;
- pipe->run_input_changes = 0;
-
- /* Done elsewhere.
- */
- ASSERT(pipe->build_state_changes == 0);
-
- START_FAST_MATH(__tmp);
+ if (!tnl->vb.Count)
+ return;
- /* If something changes in the pipeline, tag all subsequent stages
- * using this value for recalculation. Inactive stages have their
- * state and inputs examined to try to keep cached data alive over
- * state-changes.
+ /* Check for changed input sizes or change in stride to/from zero
+ * (ie const or non-const).
*/
- for ( ; s->run ; s++) {
- s->changed_inputs |= s->inputs & changed_inputs;
+ 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 );
+ }
- if (s->run_state & changed_state)
- s->changed_inputs = s->inputs;
+ tnl->pipeline.new_state = 0;
+ tnl->pipeline.input_changes = 0;
- if (s->active && running) {
- if (s->changed_inputs)
- changed_inputs |= s->outputs;
+ /* 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 );
+ }
- running = s->run( ctx, s );
+#ifndef _OPENMP
+ /* Don't adjust FPU precision mode in case multiple threads are to be used.
+ * This would require that the additional threads also changed the FPU mode
+ * which is quite a mess as this had to be done in all parallelized sections;
+ * otherwise the master thread and all other threads are running in different
+ * modes, producing inconsistent results.
+ * Note that all x64 implementations don't define/use START_FAST_MATH, so
+ * this is "hack" is only used in i386 mode
+ */
+ START_FAST_MATH(__tmp);
+#endif
- s->changed_inputs = 0;
- VB->importable_data &= ~s->outputs;
- }
+ for (i = 0; i < tnl->pipeline.nr_stages ; i++) {
+ struct tnl_pipeline_stage *s = &tnl->pipeline.stages[i];
+ if (!s->run( ctx, s ))
+ break;
}
+#ifndef _OPENMP
END_FAST_MATH(__tmp);
+#endif
}
*
* - inserting optimized (but specialized) stages ahead of the
* general-purpose fallback implementation. For example, the old
- * fastpath mechanism, which only works when the VERT_BIT_ELT input is
+ * 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 *
* Some work can be done to lift some of the restrictions in the final
* case, if it becomes necessary to do so.
*/
-const struct gl_pipeline_stage *_tnl_default_pipeline[] = {
+const struct tnl_pipeline_stage *_tnl_default_pipeline[] = {
&_tnl_vertex_transform_stage,
&_tnl_normal_transform_stage,
&_tnl_lighting_stage,
- &_tnl_fog_coordinate_stage,
&_tnl_texgen_stage,
&_tnl_texture_transform_stage,
&_tnl_point_attenuation_stage,
-#if FEATURE_NV_vertex_program
&_tnl_vertex_program_stage,
-#endif
+ &_tnl_fog_coordinate_stage,
+ &_tnl_render_stage,
+ NULL
+};
+
+const struct tnl_pipeline_stage *_tnl_vp_pipeline[] = {
+ &_tnl_vertex_program_stage,
&_tnl_render_stage,
- 0
+ NULL
};
projects / mesa.git / blobdiff