* Brian Paul
*/
-
-
#include "main/imports.h"
#include "main/mtypes.h"
#include "main/macros.h"
#include "st_atom.h"
#include "st_program.h"
#include "st_atom_shader.h"
-#include "st_mesa_to_tgsi.h"
-
-
-/**
- * This represents a vertex program, especially translated to match
- * the inputs of a particular fragment shader.
- */
-struct translated_vertex_program
-{
- struct st_vertex_program *master;
-
- /** The fragment shader "signature" this vertex shader is meant for: */
- GLbitfield frag_inputs;
-
- /** Compared against master vertex program's serialNo: */
- GLuint serialNo;
-
- /** Maps VERT_RESULT_x to slot */
- GLuint output_to_slot[VERT_RESULT_MAX];
- ubyte output_to_semantic_name[VERT_RESULT_MAX];
- ubyte output_to_semantic_index[VERT_RESULT_MAX];
-
- /** Pointer to the translated vertex program */
- struct st_vertex_program *vp;
-
- struct translated_vertex_program *next; /**< next in linked list */
-};
/**
- * Given a vertex program output attribute, return the corresponding
- * fragment program input attribute.
- * \return -1 for vertex outputs that have no corresponding fragment input
+ * Translate fragment program if needed.
*/
-static GLint
-vp_out_to_fp_in(GLuint vertResult)
-{
- if (vertResult >= VERT_RESULT_TEX0 &&
- vertResult < VERT_RESULT_TEX0 + MAX_TEXTURE_COORD_UNITS)
- return FRAG_ATTRIB_TEX0 + (vertResult - VERT_RESULT_TEX0);
-
- if (vertResult >= VERT_RESULT_VAR0 &&
- vertResult < VERT_RESULT_VAR0 + MAX_VARYING)
- return FRAG_ATTRIB_VAR0 + (vertResult - VERT_RESULT_VAR0);
-
- switch (vertResult) {
- case VERT_RESULT_HPOS:
- return FRAG_ATTRIB_WPOS;
- case VERT_RESULT_COL0:
- return FRAG_ATTRIB_COL0;
- case VERT_RESULT_COL1:
- return FRAG_ATTRIB_COL1;
- case VERT_RESULT_FOGC:
- return FRAG_ATTRIB_FOGC;
- default:
- /* Back-face colors, edge flags, etc */
- return -1;
- }
-}
-
-
-/**
- * Find a translated vertex program that corresponds to stvp and
- * has outputs matched to stfp's inputs.
- * This performs vertex and fragment translation (to TGSI) when needed.
- */
-static struct translated_vertex_program *
-find_translated_vp(struct st_context *st,
- struct st_vertex_program *stvp,
- struct st_fragment_program *stfp)
+static void
+translate_fp(struct st_context *st,
+ struct st_fragment_program *stfp)
{
- static const GLuint UNUSED = ~0;
- struct translated_vertex_program *xvp;
const GLbitfield fragInputsRead = stfp->Base.Base.InputsRead;
- /*
- * Translate fragment program if needed.
- */
if (!stfp->state.tokens) {
GLuint inAttr, numIn = 0;
numIn++;
}
else {
- stfp->input_to_slot[inAttr] = UNUSED;
+ stfp->input_to_slot[inAttr] = -1;
}
}
stfp->num_input_slots = numIn;
- assert(stfp->Base.Base.NumInstructions > 1);
+ assert(stfp->Base.Base.NumInstructions > 0);
st_translate_fragment_program(st, stfp, stfp->input_to_slot);
}
+}
- /* See if we've got a translated vertex program whose outputs match
- * the fragment program's inputs.
- * XXX This could be a hash lookup, using InputsRead as the key.
- */
- for (xvp = stfp->vertex_programs; xvp; xvp = xvp->next) {
- if (xvp->master == stvp && xvp->frag_inputs == fragInputsRead) {
- break;
- }
- }
-
- /* No? Allocate translated vp object now */
- if (!xvp) {
- xvp = ST_CALLOC_STRUCT(translated_vertex_program);
- xvp->frag_inputs = fragInputsRead;
- xvp->master = stvp;
-
- xvp->next = stfp->vertex_programs;
- stfp->vertex_programs = xvp;
- }
- /* See if we need to translate vertex program to TGSI form */
- if (xvp->serialNo != stvp->serialNo) {
- GLuint outAttr;
- const GLbitfield outputsWritten = stvp->Base.Base.OutputsWritten;
- GLuint numVpOuts = 0;
- GLboolean emitPntSize = GL_FALSE, emitBFC0 = GL_FALSE, emitBFC1 = GL_FALSE;
- GLbitfield usedGenerics = 0x0;
- GLbitfield usedOutputSlots = 0x0;
-
- /* Compute mapping of vertex program outputs to slots, which depends
- * on the fragment program's input->slot mapping.
- */
- for (outAttr = 0; outAttr < VERT_RESULT_MAX; outAttr++) {
- /* set defaults: */
- xvp->output_to_slot[outAttr] = UNUSED;
- xvp->output_to_semantic_name[outAttr] = TGSI_SEMANTIC_COUNT;
- xvp->output_to_semantic_index[outAttr] = 99;
-
- if (outAttr == VERT_RESULT_HPOS) {
- /* always put xformed position into slot zero */
- GLuint slot = 0;
- xvp->output_to_slot[VERT_RESULT_HPOS] = slot;
- xvp->output_to_semantic_name[outAttr] = TGSI_SEMANTIC_POSITION;
- xvp->output_to_semantic_index[outAttr] = 0;
- numVpOuts++;
- usedOutputSlots |= (1 << slot);
- }
- else if (outputsWritten & (1 << outAttr)) {
- /* see if the frag prog wants this vert output */
- GLint fpInAttrib = vp_out_to_fp_in(outAttr);
- if (fpInAttrib >= 0) {
- GLuint fpInSlot = stfp->input_to_slot[fpInAttrib];
- if (fpInSlot != ~0) {
- /* match this vp output to the fp input */
- GLuint vpOutSlot = stfp->input_map[fpInSlot];
- xvp->output_to_slot[outAttr] = vpOutSlot;
- xvp->output_to_semantic_name[outAttr] = stfp->input_semantic_name[fpInSlot];
- xvp->output_to_semantic_index[outAttr] = stfp->input_semantic_index[fpInSlot];
- numVpOuts++;
- usedOutputSlots |= (1 << vpOutSlot);
- }
- else {
-#if 0 /*debug*/
- printf("VP output %d not used by FP\n", outAttr);
-#endif
- }
- }
- else if (outAttr == VERT_RESULT_PSIZ)
- emitPntSize = GL_TRUE;
- else if (outAttr == VERT_RESULT_BFC0)
- emitBFC0 = GL_TRUE;
- else if (outAttr == VERT_RESULT_BFC1)
- emitBFC1 = GL_TRUE;
- }
-#if 0 /*debug*/
- printf("assign vp output_to_slot[%d] = %d\n", outAttr,
- xvp->output_to_slot[outAttr]);
-#endif
- }
+/**
+ * Find a translated vertex program that corresponds to stvp and
+ * has outputs matched to stfp's inputs.
+ * This performs vertex and fragment translation (to TGSI) when needed.
+ */
+static struct st_vp_varient *
+find_translated_vp(struct st_context *st,
+ struct st_vertex_program *stvp )
+{
+ struct st_vp_varient *vpv;
+ struct st_vp_varient_key key;
- /* must do these last */
- if (emitPntSize) {
- GLuint slot = numVpOuts++;
- xvp->output_to_slot[VERT_RESULT_PSIZ] = slot;
- xvp->output_to_semantic_name[VERT_RESULT_PSIZ] = TGSI_SEMANTIC_PSIZE;
- xvp->output_to_semantic_index[VERT_RESULT_PSIZ] = 0;
- usedOutputSlots |= (1 << slot);
- }
- if (emitBFC0) {
- GLuint slot = numVpOuts++;
- xvp->output_to_slot[VERT_RESULT_BFC0] = slot;
- xvp->output_to_semantic_name[VERT_RESULT_BFC0] = TGSI_SEMANTIC_COLOR;
- xvp->output_to_semantic_index[VERT_RESULT_BFC0] = 0;
- usedOutputSlots |= (1 << slot);
- }
- if (emitBFC1) {
- GLuint slot = numVpOuts++;
- xvp->output_to_slot[VERT_RESULT_BFC1] = slot;
- xvp->output_to_semantic_name[VERT_RESULT_BFC1] = TGSI_SEMANTIC_COLOR;
- xvp->output_to_semantic_index[VERT_RESULT_BFC1] = 1;
- usedOutputSlots |= (1 << slot);
- }
+ /* Nothing in our key yet. This will change:
+ */
+ memset(&key, 0, sizeof key);
+
+ /* When this is true, we will add an extra input to the vertex
+ * shader translation (for edgeflags), an extra output with
+ * edgeflag semantics, and extend the vertex shader to pass through
+ * the input to the output. We'll need to use similar logic to set
+ * up the extra vertex_element input for edgeflags.
+ * _NEW_POLYGON, ST_NEW_EDGEFLAGS_DATA
+ */
+ key.passthrough_edgeflags = (st->vertdata_edgeflags && (
+ st->ctx->Polygon.FrontMode != GL_FILL ||
+ st->ctx->Polygon.BackMode != GL_FILL));
- /* build usedGenerics mask */
- usedGenerics = 0x0;
- for (outAttr = 0; outAttr < VERT_RESULT_MAX; outAttr++) {
- if (xvp->output_to_semantic_name[outAttr] == TGSI_SEMANTIC_GENERIC) {
- usedGenerics |= (1 << xvp->output_to_semantic_index[outAttr]);
- }
- }
- /* For each vertex program output that doesn't match up to a fragment
- * program input, map the vertex program output to a free slot and
- * free generic attribute.
+ /* Do we need to throw away old translations after a change in the
+ * GL program string?
+ */
+ if (stvp->serialNo != stvp->lastSerialNo) {
+ /* These may have changed if the program string changed.
*/
- for (outAttr = 0; outAttr < VERT_RESULT_MAX; outAttr++) {
- if (outputsWritten & (1 << outAttr)) {
- if (xvp->output_to_slot[outAttr] == UNUSED) {
- GLint freeGeneric = _mesa_ffs(~usedGenerics) - 1;
- GLint freeSlot = _mesa_ffs(~usedOutputSlots) - 1;
- usedGenerics |= (1 << freeGeneric);
- usedOutputSlots |= (1 << freeSlot);
- xvp->output_to_slot[outAttr] = freeSlot;
- xvp->output_to_semantic_name[outAttr] = TGSI_SEMANTIC_GENERIC;
- xvp->output_to_semantic_index[outAttr] = freeGeneric;
- }
- }
+ st_prepare_vertex_program( st, stvp );
-#if 0 /*debug*/
- printf("vp output_to_slot[%d] = %d\n", outAttr,
- xvp->output_to_slot[outAttr]);
-#endif
+ /* We are now up-to-date:
+ */
+ stvp->lastSerialNo = stvp->serialNo;
+ }
+
+ /* See if we've got a translated vertex program whose outputs match
+ * the fragment program's inputs.
+ */
+ for (vpv = stvp->varients; vpv; vpv = vpv->next) {
+ if (memcmp(&vpv->key, &key, sizeof key) == 0) {
+ break;
}
-
- assert(stvp->Base.Base.NumInstructions > 1);
-
- st_translate_vertex_program(st, stvp, xvp->output_to_slot,
- xvp->output_to_semantic_name,
- xvp->output_to_semantic_index);
-
- xvp->vp = stvp;
-
- /* translated VP is up to date now */
- xvp->serialNo = stvp->serialNo;
}
- return xvp;
-}
-
-
-void
-st_free_translated_vertex_programs(struct st_context *st,
- struct translated_vertex_program *xvp)
-{
- struct translated_vertex_program *next;
-
- while (xvp) {
- next = xvp->next;
- _mesa_free(xvp);
- xvp = next;
+ /* No? Perform new translation here. */
+ if (!vpv) {
+ vpv = st_translate_vertex_program(st, stvp, &key);
+ if (!vpv)
+ return NULL;
+
+ vpv->next = stvp->varients;
+ stvp->varients = vpv;
}
+
+ return vpv;
}
+/**
+ * Return pointer to a pass-through fragment shader.
+ * This shader is used when a texture is missing/incomplete.
+ */
static void *
get_passthrough_fs(struct st_context *st)
{
}
+/**
+ * Update fragment program state/atom. This involves translating the
+ * Mesa fragment program into a gallium fragment program and binding it.
+ */
static void
-update_linkage( struct st_context *st )
+update_fp( struct st_context *st )
{
- struct st_vertex_program *stvp;
struct st_fragment_program *stfp;
- struct translated_vertex_program *xvp;
-
- /* find active shader and params -- Should be covered by
- * ST_NEW_VERTEX_PROGRAM
- */
- assert(st->ctx->VertexProgram._Current);
- stvp = st_vertex_program(st->ctx->VertexProgram._Current);
- assert(stvp->Base.Base.Target == GL_VERTEX_PROGRAM_ARB);
assert(st->ctx->FragmentProgram._Current);
stfp = st_fragment_program(st->ctx->FragmentProgram._Current);
assert(stfp->Base.Base.Target == GL_FRAGMENT_PROGRAM_ARB);
- xvp = find_translated_vp(st, stvp, stfp);
+ translate_fp(st, stfp);
- st_reference_vertprog(st, &st->vp, stvp);
st_reference_fragprog(st, &st->fp, stfp);
- cso_set_vertex_shader_handle(st->cso_context, stvp->driver_shader);
-
if (st->missing_textures) {
/* use a pass-through frag shader that uses no textures */
void *fs = get_passthrough_fs(st);
else {
cso_set_fragment_shader_handle(st->cso_context, stfp->driver_shader);
}
-
- st->vertex_result_to_slot = xvp->output_to_slot;
}
-const struct st_tracked_state st_update_shader = {
- "st_update_shader", /* name */
+const struct st_tracked_state st_update_fp = {
+ "st_update_fp", /* name */
{ /* dirty */
0, /* mesa */
- ST_NEW_VERTEX_PROGRAM | ST_NEW_FRAGMENT_PROGRAM /* st */
+ ST_NEW_FRAGMENT_PROGRAM /* st */
+ },
+ update_fp /* update */
+};
+
+
+
+/**
+ * Update vertex program state/atom. This involves translating the
+ * Mesa vertex program into a gallium fragment program and binding it.
+ */
+static void
+update_vp( struct st_context *st )
+{
+ struct st_vertex_program *stvp;
+
+ /* find active shader and params -- Should be covered by
+ * ST_NEW_VERTEX_PROGRAM
+ */
+ assert(st->ctx->VertexProgram._Current);
+ stvp = st_vertex_program(st->ctx->VertexProgram._Current);
+ assert(stvp->Base.Base.Target == GL_VERTEX_PROGRAM_ARB);
+
+ st->vp_varient = find_translated_vp(st, stvp);
+
+ st_reference_vertprog(st, &st->vp, stvp);
+
+ cso_set_vertex_shader_handle(st->cso_context,
+ st->vp_varient->driver_shader);
+
+ st->vertex_result_to_slot = stvp->result_to_output;
+}
+
+
+const struct st_tracked_state st_update_vp = {
+ "st_update_vp", /* name */
+ { /* dirty */
+ _NEW_POLYGON, /* mesa */
+ ST_NEW_VERTEX_PROGRAM | ST_NEW_EDGEFLAGS_DATA /* st */
},
- update_linkage /* update */
+ update_vp /* update */
};
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