*
* Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
* All Rights Reserved.
+ * Copyright 2008 VMware, Inc. All rights reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the
* all the enabled attributes run contiguously.
*/
-#include "pipe/p_util.h"
+#include "util/u_math.h"
+#include "util/u_memory.h"
#include "pipe/p_defines.h"
#include "pipe/p_shader_tokens.h"
#include "sp_context.h"
#include "sp_state.h"
-#include "sp_headers.h"
#include "sp_quad.h"
+#include "sp_quad_pipe.h"
#include "sp_texture.h"
#include "sp_tex_sample.h"
struct quad_shade_stage
{
- struct quad_stage stage;
- struct tgsi_sampler samplers[PIPE_MAX_SAMPLERS];
+ struct quad_stage stage; /**< base class */
struct tgsi_exec_machine machine;
struct tgsi_exec_vector *inputs, *outputs;
- int colorOutSlot, depthOutSlot;
};
}
-
/**
* Execute fragment shader for the four fragments in the quad.
*/
static void
-shade_quad(
- struct quad_stage *qs,
- struct quad_header *quad )
+shade_quad(struct quad_stage *qs, struct quad_header *quad)
{
struct quad_shade_stage *qss = quad_shade_stage( qs );
struct softpipe_context *softpipe = qs->softpipe;
struct tgsi_exec_machine *machine = &qss->machine;
-
+ boolean z_written;
+
/* Consts do not require 16 byte alignment. */
machine->Consts = softpipe->mapped_constants[PIPE_SHADER_FRAGMENT];
machine->InterpCoefs = quad->coef;
/* run shader */
- quad->mask &= softpipe->fs->run( softpipe->fs,
- &qss->machine,
- quad );
-
- /* store result color */
- if (qss->colorOutSlot >= 0) {
- /* XXX need to handle multiple color outputs someday */
- assert(qss->stage.softpipe->fs->info.output_semantic_name[qss->colorOutSlot]
- == TGSI_SEMANTIC_COLOR);
- memcpy(
- quad->outputs.color,
- &machine->Outputs[qss->colorOutSlot].xyzw[0].f[0],
- sizeof( quad->outputs.color ) );
- }
-
- /*
- * XXX the following code for updating quad->outputs.depth
- * isn't really needed if we did early z testing.
- */
-
- /* store result Z */
- if (qss->depthOutSlot >= 0) {
- /* output[slot] is new Z */
+ quad->inout.mask &= softpipe->fs->run( softpipe->fs, machine, quad );
+
+ /* store outputs */
+ z_written = FALSE;
+ {
+ const ubyte *sem_name = softpipe->fs->info.output_semantic_name;
+ const ubyte *sem_index = softpipe->fs->info.output_semantic_index;
+ const uint n = qss->stage.softpipe->fs->info.num_outputs;
uint i;
- for (i = 0; i < 4; i++) {
- quad->outputs.depth[i] = machine->Outputs[0].xyzw[2].f[i];
+ for (i = 0; i < n; i++) {
+ switch (sem_name[i]) {
+ case TGSI_SEMANTIC_COLOR:
+ {
+ uint cbuf = sem_index[i];
+ memcpy(quad->output.color[cbuf],
+ &machine->Outputs[i].xyzw[0].f[0],
+ sizeof(quad->output.color[0]) );
+ }
+ break;
+ case TGSI_SEMANTIC_POSITION:
+ {
+ uint j;
+ for (j = 0; j < 4; j++) {
+ quad->output.depth[j] = machine->Outputs[0].xyzw[2].f[j];
+ }
+ z_written = TRUE;
+ }
+ break;
+ }
}
}
- else {
- /* copy input Z (which was interpolated by the executor) to output Z */
- uint i;
- for (i = 0; i < 4; i++) {
- quad->outputs.depth[i] = machine->Inputs[0].xyzw[2].f[i];
- /* XXX not sure the above line is always correct. The following
- * might be better:
- quad->outputs.depth[i] = machine->QuadPos.xyzw[2].f[i];
- */
- }
+
+ if (!z_written) {
+ /* compute Z values now, as in the quad earlyz stage */
+ /* XXX we should really only do this if the earlyz stage is not used */
+ const float fx = (float) quad->input.x0;
+ const float fy = (float) quad->input.y0;
+ const float dzdx = quad->posCoef->dadx[2];
+ const float dzdy = quad->posCoef->dady[2];
+ const float z0 = quad->posCoef->a0[2] + dzdx * fx + dzdy * fy;
+
+ quad->output.depth[0] = z0;
+ quad->output.depth[1] = z0 + dzdx;
+ quad->output.depth[2] = z0 + dzdy;
+ quad->output.depth[3] = z0 + dzdx + dzdy;
}
/* shader may cull fragments */
- if( quad->mask ) {
+ if (quad->inout.mask) {
qs->next->run( qs->next, quad );
}
}
+
/**
* Per-primitive (or per-begin?) setup
*/
-static void shade_begin(struct quad_stage *qs)
+static void
+shade_begin(struct quad_stage *qs)
{
struct quad_shade_stage *qss = quad_shade_stage(qs);
struct softpipe_context *softpipe = qs->softpipe;
- unsigned i;
-
- /* set TGSI sampler state that varies */
- for (i = 0; i < PIPE_MAX_SAMPLERS; i++) {
- qss->samplers[i].state = softpipe->sampler[i];
- qss->samplers[i].texture = softpipe->texture[i];
- }
- /* find output slots for depth, color */
- qss->colorOutSlot = -1;
- qss->depthOutSlot = -1;
- for (i = 0; i < qss->stage.softpipe->fs->shader.num_outputs; i++) {
- switch (qss->stage.softpipe->fs->info.output_semantic_name[i]) {
- case TGSI_SEMANTIC_POSITION:
- qss->depthOutSlot = i;
- break;
- case TGSI_SEMANTIC_COLOR:
- qss->colorOutSlot = i;
- break;
- }
- }
-
softpipe->fs->prepare( softpipe->fs,
&qss->machine,
- qss->samplers );
+ (struct tgsi_sampler **)
+ softpipe->tgsi.frag_samplers_list );
qs->next->begin(qs->next);
}
-static void shade_destroy(struct quad_stage *qs)
+static void
+shade_destroy(struct quad_stage *qs)
{
struct quad_shade_stage *qss = (struct quad_shade_stage *) qs;
}
-struct quad_stage *sp_quad_shade_stage( struct softpipe_context *softpipe )
+struct quad_stage *
+sp_quad_shade_stage( struct softpipe_context *softpipe )
{
struct quad_shade_stage *qss = CALLOC_STRUCT(quad_shade_stage);
- uint i;
/* allocate storage for program inputs/outputs, aligned to 16 bytes */
- qss->inputs = MALLOC(PIPE_ATTRIB_MAX * sizeof(*qss->inputs) + 16);
- qss->outputs = MALLOC(PIPE_ATTRIB_MAX * sizeof(*qss->outputs) + 16);
+ qss->inputs = MALLOC(PIPE_MAX_ATTRIBS * sizeof(*qss->inputs) + 16);
+ qss->outputs = MALLOC(PIPE_MAX_ATTRIBS * sizeof(*qss->outputs) + 16);
qss->machine.Inputs = align16(qss->inputs);
qss->machine.Outputs = align16(qss->outputs);
qss->stage.run = shade_quad;
qss->stage.destroy = shade_destroy;
- /* set TGSI sampler state that's constant */
- for (i = 0; i < PIPE_MAX_SAMPLERS; i++) {
- assert(softpipe->tex_cache[i]);
- qss->samplers[i].get_samples = sp_get_samples;
- qss->samplers[i].pipe = &softpipe->pipe;
- qss->samplers[i].cache = softpipe->tex_cache[i];
- }
-
tgsi_exec_machine_init( &qss->machine );
return &qss->stage;
projects / mesa.git / blobdiff