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Diffstat (limited to 'src/mesa/state_tracker/st_mesa_to_tgsi.c')
-rw-r--r--src/mesa/state_tracker/st_mesa_to_tgsi.c91
1 files changed, 83 insertions, 8 deletions
diff --git a/src/mesa/state_tracker/st_mesa_to_tgsi.c b/src/mesa/state_tracker/st_mesa_to_tgsi.c
index e788008dfe..4aed2df8c3 100644
--- a/src/mesa/state_tracker/st_mesa_to_tgsi.c
+++ b/src/mesa/state_tracker/st_mesa_to_tgsi.c
@@ -34,8 +34,10 @@
#include "pipe/p_compiler.h"
#include "pipe/p_shader_tokens.h"
#include "pipe/p_state.h"
+#include "pipe/p_context.h"
#include "tgsi/tgsi_ureg.h"
#include "st_mesa_to_tgsi.h"
+#include "st_context.h"
#include "shader/prog_instruction.h"
#include "shader/prog_parameter.h"
#include "shader/prog_print.h"
@@ -48,6 +50,10 @@ struct label {
unsigned token;
};
+
+/**
+ * Intermediate state used during shader translation.
+ */
struct st_translate {
struct ureg_program *ureg;
@@ -661,6 +667,22 @@ compile_instruction(
}
}
+/**
+ * Emit the TGSI instructions to adjust the WPOS pixel center convention
+ */
+static void
+emit_adjusted_wpos( struct st_translate *t,
+ const struct gl_program *program, GLfloat value)
+{
+ struct ureg_program *ureg = t->ureg;
+ struct ureg_dst wpos_temp = ureg_DECL_temporary(ureg);
+ struct ureg_src wpos_input = t->inputs[t->inputMapping[FRAG_ATTRIB_WPOS]];
+
+ ureg_ADD(ureg, ureg_writemask(wpos_temp, TGSI_WRITEMASK_X | TGSI_WRITEMASK_Y),
+ wpos_input, ureg_imm1f(ureg, value));
+
+ t->inputs[t->inputMapping[FRAG_ATTRIB_WPOS]] = ureg_src(wpos_temp);
+}
/**
* Emit the TGSI instructions for inverting the WPOS y coordinate.
@@ -686,12 +708,17 @@ emit_inverted_wpos( struct st_translate *t,
winSizeState);
struct ureg_src winsize = ureg_DECL_constant( ureg, winHeightConst );
- struct ureg_dst wpos_temp = ureg_DECL_temporary( ureg );
+ struct ureg_dst wpos_temp;
struct ureg_src wpos_input = t->inputs[t->inputMapping[FRAG_ATTRIB_WPOS]];
/* MOV wpos_temp, input[wpos]
*/
- ureg_MOV( ureg, wpos_temp, wpos_input );
+ if (wpos_input.File == TGSI_FILE_TEMPORARY)
+ wpos_temp = ureg_dst(wpos_input);
+ else {
+ wpos_temp = ureg_DECL_temporary( ureg );
+ ureg_MOV( ureg, wpos_temp, wpos_input );
+ }
/* SUB wpos_temp.y, winsize_const, wpos_input
*/
@@ -730,6 +757,7 @@ emit_face_var( struct st_translate *t,
t->inputs[t->inputMapping[FRAG_ATTRIB_FACE]] = ureg_src(face_temp);
}
+
static void
emit_edgeflags( struct st_translate *t,
const struct gl_program *program )
@@ -741,6 +769,7 @@ emit_edgeflags( struct st_translate *t,
ureg_MOV( ureg, edge_dst, edge_src );
}
+
/**
* Translate Mesa program to TGSI format.
* \param program the program to translate
@@ -758,7 +787,7 @@ emit_edgeflags( struct st_translate *t,
* \param outputSemanticIndex the semantic index (ex: which texcoord) for
* each output
*
- * \return array of translated tokens, caller's responsibility to free
+ * \return PIPE_OK or PIPE_ERROR_OUT_OF_MEMORY
*/
enum pipe_error
st_translate_mesa_program(
@@ -779,6 +808,7 @@ st_translate_mesa_program(
{
struct st_translate translate, *t;
unsigned i;
+ enum pipe_error ret = PIPE_OK;
t = &translate;
memset(t, 0, sizeof *t);
@@ -794,6 +824,7 @@ st_translate_mesa_program(
* Declare input attributes.
*/
if (procType == TGSI_PROCESSOR_FRAGMENT) {
+ struct gl_fragment_program* fp = (struct gl_fragment_program*)program;
for (i = 0; i < numInputs; i++) {
t->inputs[i] = ureg_DECL_fs_input(ureg,
inputSemanticName[i],
@@ -805,7 +836,51 @@ st_translate_mesa_program(
/* Must do this after setting up t->inputs, and before
* emitting constant references, below:
*/
- emit_inverted_wpos( t, program );
+ struct pipe_screen* pscreen = st_context(ctx)->pipe->screen;
+ boolean invert = FALSE;
+
+ if (fp->OriginUpperLeft) {
+ if (pscreen->get_param(pscreen, PIPE_CAP_TGSI_FS_COORD_ORIGIN_UPPER_LEFT)) {
+ }
+ else if (pscreen->get_param(pscreen, PIPE_CAP_TGSI_FS_COORD_ORIGIN_LOWER_LEFT)) {
+ ureg_property_fs_coord_origin(ureg, TGSI_FS_COORD_ORIGIN_LOWER_LEFT);
+ invert = TRUE;
+ }
+ else
+ assert(0);
+ }
+ else {
+ if (pscreen->get_param(pscreen, PIPE_CAP_TGSI_FS_COORD_ORIGIN_LOWER_LEFT))
+ ureg_property_fs_coord_origin(ureg, TGSI_FS_COORD_ORIGIN_LOWER_LEFT);
+ else if (pscreen->get_param(pscreen, PIPE_CAP_TGSI_FS_COORD_ORIGIN_UPPER_LEFT))
+ invert = TRUE;
+ else
+ assert(0);
+ }
+
+ if (fp->PixelCenterInteger) {
+ if (pscreen->get_param(pscreen, PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_INTEGER))
+ ureg_property_fs_coord_pixel_center(ureg, TGSI_FS_COORD_PIXEL_CENTER_INTEGER);
+ else if (pscreen->get_param(pscreen, PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_HALF_INTEGER))
+ emit_adjusted_wpos(t, program, invert ? 0.5f : -0.5f);
+ else
+ assert(0);
+ }
+ else {
+ if (pscreen->get_param(pscreen, PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_HALF_INTEGER)) {
+ }
+ else if (pscreen->get_param(pscreen, PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_INTEGER)) {
+ ureg_property_fs_coord_pixel_center(ureg, TGSI_FS_COORD_PIXEL_CENTER_INTEGER);
+ emit_adjusted_wpos(t, program, invert ? -0.5f : 0.5f);
+ }
+ else
+ assert(0);
+ }
+
+ /* we invert after adjustment so that we avoid the MOV to temporary,
+ * and reuse the adjustment ADD instead */
+ if (invert)
+ emit_inverted_wpos(t, program);
}
if (program->InputsRead & FRAG_BIT_FACE) {
@@ -865,8 +940,10 @@ st_translate_mesa_program(
t->constants = CALLOC( program->Parameters->NumParameters,
sizeof t->constants[0] );
- if (t->constants == NULL)
+ if (t->constants == NULL) {
+ ret = PIPE_ERROR_OUT_OF_MEMORY;
goto out;
+ }
for (i = 0; i < program->Parameters->NumParameters; i++) {
switch (program->Parameters->Parameters[i].Type) {
@@ -920,8 +997,6 @@ st_translate_mesa_program(
t->insn[t->labels[i].branch_target] );
}
- return PIPE_OK;
-
out:
FREE(t->insn);
FREE(t->labels);
@@ -931,7 +1006,7 @@ out:
debug_printf("%s: translate error flag set\n", __FUNCTION__);
}
- return PIPE_ERROR_OUT_OF_MEMORY;
+ return ret;
}
generated by cgit v1.2.3 (git 2.39.1) at 2024-06-01 04:52:52 +0000