return vpv;
}
-/**
- * Translate Mesa fragment shader attributes to TGSI attributes.
- * \return GL_TRUE if color output should be written to all render targets,
- * GL_FALSE if not
- */
-GLboolean
-st_prepare_fragment_program(struct gl_context *ctx,
- struct st_fragment_program *stfp)
-{
- GLuint attr;
- const GLbitfield inputsRead = stfp->Base.Base.InputsRead;
- GLboolean write_all = GL_FALSE;
-
- /*
- * Convert Mesa program inputs to TGSI input register semantics.
- */
- for (attr = 0; attr < FRAG_ATTRIB_MAX; attr++) {
- if (inputsRead & (1 << attr)) {
- const GLuint slot = stfp->num_inputs++;
-
- stfp->input_to_index[attr] = slot;
-
- switch (attr) {
- case FRAG_ATTRIB_WPOS:
- stfp->input_semantic_name[slot] = TGSI_SEMANTIC_POSITION;
- stfp->input_semantic_index[slot] = 0;
- stfp->interp_mode[slot] = TGSI_INTERPOLATE_LINEAR;
- break;
- case FRAG_ATTRIB_COL0:
- stfp->input_semantic_name[slot] = TGSI_SEMANTIC_COLOR;
- stfp->input_semantic_index[slot] = 0;
- stfp->interp_mode[slot] = TGSI_INTERPOLATE_LINEAR;
- break;
- case FRAG_ATTRIB_COL1:
- stfp->input_semantic_name[slot] = TGSI_SEMANTIC_COLOR;
- stfp->input_semantic_index[slot] = 1;
- stfp->interp_mode[slot] = TGSI_INTERPOLATE_LINEAR;
- break;
- case FRAG_ATTRIB_FOGC:
- stfp->input_semantic_name[slot] = TGSI_SEMANTIC_FOG;
- stfp->input_semantic_index[slot] = 0;
- stfp->interp_mode[slot] = TGSI_INTERPOLATE_PERSPECTIVE;
- break;
- case FRAG_ATTRIB_FACE:
- stfp->input_semantic_name[slot] = TGSI_SEMANTIC_FACE;
- stfp->input_semantic_index[slot] = 0;
- stfp->interp_mode[slot] = TGSI_INTERPOLATE_CONSTANT;
- break;
- /* In most cases, there is nothing special about these
- * inputs, so adopt a convention to use the generic
- * semantic name and the mesa FRAG_ATTRIB_ number as the
- * index.
- *
- * All that is required is that the vertex shader labels
- * its own outputs similarly, and that the vertex shader
- * generates at least every output required by the
- * fragment shader plus fixed-function hardware (such as
- * BFC).
- *
- * There is no requirement that semantic indexes start at
- * zero or be restricted to a particular range -- nobody
- * should be building tables based on semantic index.
- */
- case FRAG_ATTRIB_PNTC:
- case FRAG_ATTRIB_TEX0:
- case FRAG_ATTRIB_TEX1:
- case FRAG_ATTRIB_TEX2:
- case FRAG_ATTRIB_TEX3:
- case FRAG_ATTRIB_TEX4:
- case FRAG_ATTRIB_TEX5:
- case FRAG_ATTRIB_TEX6:
- case FRAG_ATTRIB_TEX7:
- case FRAG_ATTRIB_VAR0:
- default:
- /* Actually, let's try and zero-base this just for
- * readability of the generated TGSI.
- */
- assert(attr >= FRAG_ATTRIB_TEX0);
- stfp->input_semantic_index[slot] = (attr - FRAG_ATTRIB_TEX0);
- stfp->input_semantic_name[slot] = TGSI_SEMANTIC_GENERIC;
- if (attr == FRAG_ATTRIB_PNTC)
- stfp->interp_mode[slot] = TGSI_INTERPOLATE_LINEAR;
- else
- stfp->interp_mode[slot] = TGSI_INTERPOLATE_PERSPECTIVE;
- break;
- }
- }
- else {
- stfp->input_to_index[attr] = -1;
- }
- }
-
- /*
- * Semantics and mapping for outputs
- */
- {
- uint numColors = 0;
- GLbitfield64 outputsWritten = stfp->Base.Base.OutputsWritten;
-
- /* if z is written, emit that first */
- if (outputsWritten & BITFIELD64_BIT(FRAG_RESULT_DEPTH)) {
- stfp->output_semantic_name[stfp->num_outputs] = TGSI_SEMANTIC_POSITION;
- stfp->output_semantic_index[stfp->num_outputs] = 0;
- stfp->result_to_output[FRAG_RESULT_DEPTH] = stfp->num_outputs;
- stfp->num_outputs++;
- outputsWritten &= ~(1 << FRAG_RESULT_DEPTH);
- }
-
- if (outputsWritten & BITFIELD64_BIT(FRAG_RESULT_STENCIL)) {
- stfp->output_semantic_name[stfp->num_outputs] = TGSI_SEMANTIC_STENCIL;
- stfp->output_semantic_index[stfp->num_outputs] = 0;
- stfp->result_to_output[FRAG_RESULT_STENCIL] = stfp->num_outputs;
- stfp->num_outputs++;
- outputsWritten &= ~(1 << FRAG_RESULT_STENCIL);
- }
-
- /* handle remaning outputs (color) */
- for (attr = 0; attr < FRAG_RESULT_MAX; attr++) {
- if (outputsWritten & BITFIELD64_BIT(attr)) {
- switch (attr) {
- case FRAG_RESULT_DEPTH:
- case FRAG_RESULT_STENCIL:
- /* handled above */
- assert(0);
- break;
- case FRAG_RESULT_COLOR:
- write_all = GL_TRUE; /* fallthrough */
- default:
- assert(attr == FRAG_RESULT_COLOR ||
- (FRAG_RESULT_DATA0 <= attr && attr < FRAG_RESULT_MAX));
- stfp->output_semantic_name[stfp->num_outputs] = TGSI_SEMANTIC_COLOR;
- stfp->output_semantic_index[stfp->num_outputs] = numColors;
- stfp->result_to_output[attr] = stfp->num_outputs;
- numColors++;
- break;
- }
-
- stfp->num_outputs++;
- }
- }
- }
-
- return write_all;
-}
-
/**
* Translate a Mesa fragment shader into a TGSI shader using extra info in
if (!stfp->tgsi.tokens) {
/* need to translate Mesa instructions to TGSI now */
+ GLuint outputMapping[FRAG_RESULT_MAX];
+ GLuint inputMapping[FRAG_ATTRIB_MAX];
+ GLuint interpMode[PIPE_MAX_SHADER_INPUTS]; /* XXX size? */
+ GLuint attr;
+ const GLbitfield inputsRead = stfp->Base.Base.InputsRead;
struct ureg_program *ureg;
- GLboolean write_all = st_prepare_fragment_program(st->ctx, stfp);
+
+ GLboolean write_all = GL_FALSE;
+
+ ubyte input_semantic_name[PIPE_MAX_SHADER_INPUTS];
+ ubyte input_semantic_index[PIPE_MAX_SHADER_INPUTS];
+ uint fs_num_inputs = 0;
+
+ ubyte fs_output_semantic_name[PIPE_MAX_SHADER_OUTPUTS];
+ ubyte fs_output_semantic_index[PIPE_MAX_SHADER_OUTPUTS];
+ uint fs_num_outputs = 0;
if (!stfp->glsl_to_tgsi)
_mesa_remove_output_reads(&stfp->Base.Base, PROGRAM_OUTPUT);
+ /*
+ * Convert Mesa program inputs to TGSI input register semantics.
+ */
+ for (attr = 0; attr < FRAG_ATTRIB_MAX; attr++) {
+ if (inputsRead & (1 << attr)) {
+ const GLuint slot = fs_num_inputs++;
+
+ inputMapping[attr] = slot;
+
+ switch (attr) {
+ case FRAG_ATTRIB_WPOS:
+ input_semantic_name[slot] = TGSI_SEMANTIC_POSITION;
+ input_semantic_index[slot] = 0;
+ interpMode[slot] = TGSI_INTERPOLATE_LINEAR;
+ break;
+ case FRAG_ATTRIB_COL0:
+ input_semantic_name[slot] = TGSI_SEMANTIC_COLOR;
+ input_semantic_index[slot] = 0;
+ interpMode[slot] = TGSI_INTERPOLATE_LINEAR;
+ break;
+ case FRAG_ATTRIB_COL1:
+ input_semantic_name[slot] = TGSI_SEMANTIC_COLOR;
+ input_semantic_index[slot] = 1;
+ interpMode[slot] = TGSI_INTERPOLATE_LINEAR;
+ break;
+ case FRAG_ATTRIB_FOGC:
+ input_semantic_name[slot] = TGSI_SEMANTIC_FOG;
+ input_semantic_index[slot] = 0;
+ interpMode[slot] = TGSI_INTERPOLATE_PERSPECTIVE;
+ break;
+ case FRAG_ATTRIB_FACE:
+ input_semantic_name[slot] = TGSI_SEMANTIC_FACE;
+ input_semantic_index[slot] = 0;
+ interpMode[slot] = TGSI_INTERPOLATE_CONSTANT;
+ break;
+ /* In most cases, there is nothing special about these
+ * inputs, so adopt a convention to use the generic
+ * semantic name and the mesa FRAG_ATTRIB_ number as the
+ * index.
+ *
+ * All that is required is that the vertex shader labels
+ * its own outputs similarly, and that the vertex shader
+ * generates at least every output required by the
+ * fragment shader plus fixed-function hardware (such as
+ * BFC).
+ *
+ * There is no requirement that semantic indexes start at
+ * zero or be restricted to a particular range -- nobody
+ * should be building tables based on semantic index.
+ */
+ case FRAG_ATTRIB_PNTC:
+ case FRAG_ATTRIB_TEX0:
+ case FRAG_ATTRIB_TEX1:
+ case FRAG_ATTRIB_TEX2:
+ case FRAG_ATTRIB_TEX3:
+ case FRAG_ATTRIB_TEX4:
+ case FRAG_ATTRIB_TEX5:
+ case FRAG_ATTRIB_TEX6:
+ case FRAG_ATTRIB_TEX7:
+ case FRAG_ATTRIB_VAR0:
+ default:
+ /* Actually, let's try and zero-base this just for
+ * readability of the generated TGSI.
+ */
+ assert(attr >= FRAG_ATTRIB_TEX0);
+ input_semantic_index[slot] = (attr - FRAG_ATTRIB_TEX0);
+ input_semantic_name[slot] = TGSI_SEMANTIC_GENERIC;
+ if (attr == FRAG_ATTRIB_PNTC)
+ interpMode[slot] = TGSI_INTERPOLATE_LINEAR;
+ else
+ interpMode[slot] = TGSI_INTERPOLATE_PERSPECTIVE;
+ break;
+ }
+ }
+ else {
+ inputMapping[attr] = -1;
+ }
+ }
+
+ /*
+ * Semantics and mapping for outputs
+ */
+ {
+ uint numColors = 0;
+ GLbitfield64 outputsWritten = stfp->Base.Base.OutputsWritten;
+
+ /* if z is written, emit that first */
+ if (outputsWritten & BITFIELD64_BIT(FRAG_RESULT_DEPTH)) {
+ fs_output_semantic_name[fs_num_outputs] = TGSI_SEMANTIC_POSITION;
+ fs_output_semantic_index[fs_num_outputs] = 0;
+ outputMapping[FRAG_RESULT_DEPTH] = fs_num_outputs;
+ fs_num_outputs++;
+ outputsWritten &= ~(1 << FRAG_RESULT_DEPTH);
+ }
+
+ if (outputsWritten & BITFIELD64_BIT(FRAG_RESULT_STENCIL)) {
+ fs_output_semantic_name[fs_num_outputs] = TGSI_SEMANTIC_STENCIL;
+ fs_output_semantic_index[fs_num_outputs] = 0;
+ outputMapping[FRAG_RESULT_STENCIL] = fs_num_outputs;
+ fs_num_outputs++;
+ outputsWritten &= ~(1 << FRAG_RESULT_STENCIL);
+ }
+
+ /* handle remaning outputs (color) */
+ for (attr = 0; attr < FRAG_RESULT_MAX; attr++) {
+ if (outputsWritten & BITFIELD64_BIT(attr)) {
+ switch (attr) {
+ case FRAG_RESULT_DEPTH:
+ case FRAG_RESULT_STENCIL:
+ /* handled above */
+ assert(0);
+ break;
+ case FRAG_RESULT_COLOR:
+ write_all = GL_TRUE; /* fallthrough */
+ default:
+ assert(attr == FRAG_RESULT_COLOR ||
+ (FRAG_RESULT_DATA0 <= attr && attr < FRAG_RESULT_MAX));
+ fs_output_semantic_name[fs_num_outputs] = TGSI_SEMANTIC_COLOR;
+ fs_output_semantic_index[fs_num_outputs] = numColors;
+ outputMapping[attr] = fs_num_outputs;
+ numColors++;
+ break;
+ }
+
+ fs_num_outputs++;
+ }
+ }
+ }
+
ureg = ureg_create( TGSI_PROCESSOR_FRAGMENT );
if (ureg == NULL)
return NULL;
stfp->glsl_to_tgsi,
&stfp->Base.Base,
/* inputs */
- stfp->num_inputs,
- stfp->input_to_index,
- stfp->input_semantic_name,
- stfp->input_semantic_index,
- stfp->interp_mode,
+ fs_num_inputs,
+ inputMapping,
+ input_semantic_name,
+ input_semantic_index,
+ interpMode,
/* outputs */
- stfp->num_outputs,
- stfp->result_to_output,
- stfp->output_semantic_name,
- stfp->output_semantic_index, FALSE );
+ fs_num_outputs,
+ outputMapping,
+ fs_output_semantic_name,
+ fs_output_semantic_index, FALSE );
else
st_translate_mesa_program(st->ctx,
TGSI_PROCESSOR_FRAGMENT,
ureg,
&stfp->Base.Base,
/* inputs */
- stfp->num_inputs,
- stfp->input_to_index,
- stfp->input_semantic_name,
- stfp->input_semantic_index,
- stfp->interp_mode,
+ fs_num_inputs,
+ inputMapping,
+ input_semantic_name,
+ input_semantic_index,
+ interpMode,
/* outputs */
- stfp->num_outputs,
- stfp->result_to_output,
- stfp->output_semantic_name,
- stfp->output_semantic_index, FALSE );
+ fs_num_outputs,
+ outputMapping,
+ fs_output_semantic_name,
+ fs_output_semantic_index, FALSE );
stfp->tgsi.tokens = ureg_get_tokens( ureg, NULL );
ureg_destroy( ureg );
projects / mesa.git / commitdiff