/*
* Mesa 3-D graphics library
- * Version: 6.5.3
*
* Copyright (C) 1999-2007 Brian Paul All Rights Reserved.
*
* 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 <keith@tungstengraphics.com>
+ * Keith Whitwell <keithw@vmware.com>
*/
#include "main/glheader.h"
#include "main/context.h"
-#include "main/imports.h"
+
#include "main/mtypes.h"
#include "t_context.h"
#include "t_vp_build.h"
#include "t_vertex.h"
-void _tnl_install_pipeline( GLcontext *ctx,
+void _tnl_install_pipeline( struct gl_context *ctx,
const struct tnl_pipeline_stage **stages )
{
TNLcontext *tnl = TNL_CONTEXT(ctx);
*/
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));
+ memcpy(s, stages[i], sizeof(*s));
if (s->create)
s->create(ctx, s);
}
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;
-static GLuint check_input_changes( GLcontext *ctx )
+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]) {
}
}
- if (tnl->pipeline.input_changes &&
- tnl->Driver.NotifyInputChanges)
- tnl->Driver.NotifyInputChanges( ctx, tnl->pipeline.input_changes );
-
return tnl->pipeline.input_changes;
}
-static GLuint check_output_changes( GLcontext *ctx )
+static GLuint check_output_changes( struct gl_context *ctx )
{
#if 0
TNLcontext *tnl = TNL_CONTEXT(ctx);
-
- for (i = 0; i < VERT_RESULT_MAX; i++) {
+
+ 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;
}
}
- if (tnl->pipeline.output_changes)
+ 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);
unsigned short __tmp;
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.
_tnl_notify_pipeline_output_change( ctx );
}
+#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
for (i = 0; i < tnl->pipeline.nr_stages ; i++) {
struct tnl_pipeline_stage *s = &tnl->pipeline.stages[i];
break;
}
+#ifndef _OPENMP
END_FAST_MATH(__tmp);
+#endif
}
&_tnl_texgen_stage,
&_tnl_texture_transform_stage,
&_tnl_point_attenuation_stage,
- &_tnl_vertex_program_stage,
+ &_tnl_vertex_program_stage,
&_tnl_fog_coordinate_stage,
&_tnl_render_stage,
- NULL
+ NULL
};
const struct tnl_pipeline_stage *_tnl_vp_pipeline[] = {
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