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Diffstat (limited to 'src/mesa/pipe/softpipe/sp_prim_setup.c')
-rw-r--r--src/mesa/pipe/softpipe/sp_prim_setup.c339
1 files changed, 217 insertions, 122 deletions
diff --git a/src/mesa/pipe/softpipe/sp_prim_setup.c b/src/mesa/pipe/softpipe/sp_prim_setup.c
index fc96f92af1..8d8dceadc5 100644
--- a/src/mesa/pipe/softpipe/sp_prim_setup.c
+++ b/src/mesa/pipe/softpipe/sp_prim_setup.c
@@ -36,10 +36,12 @@
#include "sp_context.h"
#include "sp_headers.h"
#include "sp_quad.h"
+#include "sp_state.h"
#include "sp_prim_setup.h"
#include "pipe/draw/draw_private.h"
#include "pipe/draw/draw_vertex.h"
#include "pipe/p_util.h"
+#include "pipe/p_shader_tokens.h"
#define DEBUG_VERTS 0
@@ -80,8 +82,11 @@ struct setup_stage {
float oneoverarea;
struct tgsi_interp_coef coef[PIPE_MAX_SHADER_INPUTS];
+ struct tgsi_interp_coef posCoef; /* For Z, W */
struct quad_header quad;
+ uint firstFpInput; /** Semantic type of first frag input */
+
struct {
int left[2]; /**< [0] = row0, [1] = row1 */
int right[2];
@@ -365,18 +370,17 @@ static boolean setup_sort_vertices( struct setup_stage *setup,
* \param i which component of the slot (0..3)
*/
static void const_coeff( struct setup_stage *setup,
- unsigned slot,
- unsigned i )
+ struct tgsi_interp_coef *coef,
+ uint vertSlot, uint i)
{
- assert(slot < PIPE_MAX_SHADER_INPUTS);
assert(i <= 3);
- setup->coef[slot].dadx[i] = 0;
- setup->coef[slot].dady[i] = 0;
+ coef->dadx[i] = 0;
+ coef->dady[i] = 0;
/* need provoking vertex info!
*/
- setup->coef[slot].a0[i] = setup->vprovoke->data[slot][i];
+ coef->a0[i] = setup->vprovoke->data[vertSlot][i];
}
@@ -385,19 +389,20 @@ static void const_coeff( struct setup_stage *setup,
* for a triangle.
*/
static void tri_linear_coeff( struct setup_stage *setup,
- unsigned slot,
- unsigned i)
+ struct tgsi_interp_coef *coef,
+ uint vertSlot, uint i)
{
- float botda = setup->vmid->data[slot][i] - setup->vmin->data[slot][i];
- float majda = setup->vmax->data[slot][i] - setup->vmin->data[slot][i];
+ float botda = setup->vmid->data[vertSlot][i] - setup->vmin->data[vertSlot][i];
+ float majda = setup->vmax->data[vertSlot][i] - setup->vmin->data[vertSlot][i];
float a = setup->ebot.dy * majda - botda * setup->emaj.dy;
float b = setup->emaj.dx * botda - majda * setup->ebot.dx;
-
- assert(slot < PIPE_MAX_SHADER_INPUTS);
+ float dadx = a * setup->oneoverarea;
+ float dady = b * setup->oneoverarea;
+
assert(i <= 3);
- setup->coef[slot].dadx[i] = a * setup->oneoverarea;
- setup->coef[slot].dady[i] = b * setup->oneoverarea;
+ coef->dadx[i] = dadx;
+ coef->dady[i] = dady;
/* calculate a0 as the value which would be sampled for the
* fragment at (0,0), taking into account that we want to sample at
@@ -411,9 +416,9 @@ static void tri_linear_coeff( struct setup_stage *setup,
* to define a0 as the sample at a pixel center somewhere near vmin
* instead - i'll switch to this later.
*/
- setup->coef[slot].a0[i] = (setup->vmin->data[slot][i] -
- (setup->coef[slot].dadx[i] * (setup->vmin->data[0][0] - 0.5f) +
- setup->coef[slot].dady[i] * (setup->vmin->data[0][1] - 0.5f)));
+ coef->a0[i] = (setup->vmin->data[vertSlot][i] -
+ (dadx * (setup->vmin->data[0][0] - 0.5f) +
+ dady * (setup->vmin->data[0][1] - 0.5f)));
/*
_mesa_printf("attr[%d].%c: %f dx:%f dy:%f\n",
@@ -434,39 +439,68 @@ static void tri_linear_coeff( struct setup_stage *setup,
* divide the interpolated value by the interpolated W at that fragment.
*/
static void tri_persp_coeff( struct setup_stage *setup,
- unsigned slot,
- unsigned i )
+ struct tgsi_interp_coef *coef,
+ uint vertSlot, uint i)
{
- /* premultiply by 1/w:
+ /* premultiply by 1/w (v->data[0][3] is always W):
*/
- float mina = setup->vmin->data[slot][i] * setup->vmin->data[0][3];
- float mida = setup->vmid->data[slot][i] * setup->vmid->data[0][3];
- float maxa = setup->vmax->data[slot][i] * setup->vmax->data[0][3];
-
+ float mina = setup->vmin->data[vertSlot][i] * setup->vmin->data[0][3];
+ float mida = setup->vmid->data[vertSlot][i] * setup->vmid->data[0][3];
+ float maxa = setup->vmax->data[vertSlot][i] * setup->vmax->data[0][3];
float botda = mida - mina;
float majda = maxa - mina;
float a = setup->ebot.dy * majda - botda * setup->emaj.dy;
float b = setup->emaj.dx * botda - majda * setup->ebot.dx;
+ float dadx = a * setup->oneoverarea;
+ float dady = b * setup->oneoverarea;
/*
- printf("tri persp %d,%d: %f %f %f\n", slot, i,
- setup->vmin->data[slot][i],
- setup->vmid->data[slot][i],
- setup->vmax->data[slot][i]
+ printf("tri persp %d,%d: %f %f %f\n", vertSlot, i,
+ setup->vmin->data[vertSlot][i],
+ setup->vmid->data[vertSlot][i],
+ setup->vmax->data[vertSlot][i]
);
*/
-
- assert(slot < PIPE_MAX_SHADER_INPUTS);
assert(i <= 3);
- setup->coef[slot].dadx[i] = a * setup->oneoverarea;
- setup->coef[slot].dady[i] = b * setup->oneoverarea;
- setup->coef[slot].a0[i] = (mina -
- (setup->coef[slot].dadx[i] * (setup->vmin->data[0][0] - 0.5f) +
- setup->coef[slot].dady[i] * (setup->vmin->data[0][1] - 0.5f)));
+ coef->dadx[i] = dadx;
+ coef->dady[i] = dady;
+ coef->a0[i] = (mina -
+ (dadx * (setup->vmin->data[0][0] - 0.5f) +
+ dady * (setup->vmin->data[0][1] - 0.5f)));
+}
+
+
+/**
+ * Special coefficient setup for gl_FragCoord.
+ * X and Y are trivial, though Y has to be inverted for OpenGL.
+ * Z and W are copied from posCoef which should have already been computed.
+ * We could do a bit less work if we'd examine gl_FragCoord's swizzle mask.
+ */
+static void
+setup_fragcoord_coeff(struct setup_stage *setup)
+{
+ const int winHeight = setup->softpipe->framebuffer.cbufs[0]->height;
+ /*X*/
+ setup->coef[0].a0[0] = 0;
+ setup->coef[0].dadx[0] = 1.0;
+ setup->coef[0].dady[0] = 0.0;
+ /*Y*/
+ setup->coef[0].a0[1] = winHeight - 1;
+ setup->coef[0].dadx[1] = 0.0;
+ setup->coef[0].dady[1] = -1.0;
+ /*Z*/
+ setup->coef[0].a0[2] = setup->posCoef.a0[2];
+ setup->coef[0].dadx[2] = setup->posCoef.dadx[2];
+ setup->coef[0].dady[2] = setup->posCoef.dady[2];
+ /*w*/
+ setup->coef[0].a0[3] = setup->posCoef.a0[3];
+ setup->coef[0].dadx[3] = setup->posCoef.dadx[3];
+ setup->coef[0].dady[3] = setup->posCoef.dady[3];
}
+
/**
* Compute the setup->coef[] array dadx, dady, a0 values.
* Must be called after setup->vmin,vmid,vmax,vprovoke are initialized.
@@ -474,36 +508,67 @@ static void tri_persp_coeff( struct setup_stage *setup,
static void setup_tri_coefficients( struct setup_stage *setup )
{
const enum interp_mode *interp = setup->softpipe->vertex_info.interp_mode;
- unsigned slot, j;
+#define USE_INPUT_MAP 0
+#if USE_INPUT_MAP
+ const struct pipe_shader_state *fs = &setup->softpipe->fs->shader;
+#endif
+ uint fragSlot;
/* z and w are done by linear interpolation:
*/
- tri_linear_coeff(setup, 0, 2);
- tri_linear_coeff(setup, 0, 3);
+ tri_linear_coeff(setup, &setup->posCoef, 0, 2);
+ tri_linear_coeff(setup, &setup->posCoef, 0, 3);
/* setup interpolation for all the remaining attributes:
*/
- for (slot = 1; slot < setup->quad.nr_attrs; slot++) {
- switch (interp[slot]) {
- case INTERP_CONSTANT:
- for (j = 0; j < NUM_CHANNELS; j++)
- const_coeff(setup, slot, j);
- break;
-
- case INTERP_LINEAR:
- for (j = 0; j < NUM_CHANNELS; j++)
- tri_linear_coeff(setup, slot, j);
- break;
-
- case INTERP_PERSPECTIVE:
- for (j = 0; j < NUM_CHANNELS; j++)
- tri_persp_coeff(setup, slot, j);
- break;
-
- default:
- /* invalid interp mode */
- assert(0);
+ for (fragSlot = 0; fragSlot < setup->quad.nr_attrs; fragSlot++) {
+ /* which vertex output maps to this fragment input: */
+#if !USE_INPUT_MAP
+ uint vertSlot;
+ if (setup->firstFpInput == TGSI_SEMANTIC_POSITION) {
+ if (fragSlot == 0) {
+ setup_fragcoord_coeff(setup);
+ continue;
+ }
+ vertSlot = fragSlot;
+ }
+ else {
+ vertSlot = fragSlot + 1;
}
+
+#else
+ uint vertSlot = fs->input_map[fragSlot];
+
+ if (vertSlot == 0) {
+ /* special case: shader is reading gl_FragCoord */
+ /* XXX with a new INTERP_POSITION token, we could just add a
+ * new case to the switch below.
+ */
+ setup_fragcoord_coeff(setup);
+ }
+ else {
+#endif
+ uint j;
+ switch (interp[vertSlot]) {
+ case INTERP_CONSTANT:
+ for (j = 0; j < NUM_CHANNELS; j++)
+ const_coeff(setup, &setup->coef[fragSlot], vertSlot, j);
+ break;
+ case INTERP_LINEAR:
+ for (j = 0; j < NUM_CHANNELS; j++)
+ tri_linear_coeff(setup, &setup->coef[fragSlot], vertSlot, j);
+ break;
+ case INTERP_PERSPECTIVE:
+ for (j = 0; j < NUM_CHANNELS; j++)
+ tri_persp_coeff(setup, &setup->coef[fragSlot], vertSlot, j);
+ break;
+ default:
+ /* invalid interp mode */
+ assert(0);
+ }
+#if USE_INPUT_MAP
+ }
+#endif
}
}
@@ -660,17 +725,18 @@ static void setup_tri( struct draw_stage *stage,
* for a line.
*/
static void
-line_linear_coeff(struct setup_stage *setup, unsigned slot, unsigned i)
+line_linear_coeff(struct setup_stage *setup,
+ struct tgsi_interp_coef *coef,
+ uint vertSlot, uint i)
{
- const float da = setup->vmax->data[slot][i] - setup->vmin->data[slot][i];
+ const float da = setup->vmax->data[vertSlot][i] - setup->vmin->data[vertSlot][i];
const float dadx = da * setup->emaj.dx * setup->oneoverarea;
const float dady = da * setup->emaj.dy * setup->oneoverarea;
- setup->coef[slot].dadx[i] = dadx;
- setup->coef[slot].dady[i] = dady;
- setup->coef[slot].a0[i]
- = (setup->vmin->data[slot][i] -
- (dadx * (setup->vmin->data[0][0] - 0.5f) +
- dady * (setup->vmin->data[0][1] - 0.5f)));
+ coef->dadx[i] = dadx;
+ coef->dady[i] = dady;
+ coef->a0[i] = (setup->vmin->data[vertSlot][i] -
+ (dadx * (setup->vmin->data[0][0] - 0.5f) +
+ dady * (setup->vmin->data[0][1] - 0.5f)));
}
@@ -679,21 +745,21 @@ line_linear_coeff(struct setup_stage *setup, unsigned slot, unsigned i)
* for a line.
*/
static void
-line_persp_coeff(struct setup_stage *setup, unsigned slot, unsigned i)
+line_persp_coeff(struct setup_stage *setup,
+ struct tgsi_interp_coef *coef,
+ uint vertSlot, uint i)
{
/* XXX double-check/verify this arithmetic */
- const float a0 = setup->vmin->data[slot][i] * setup->vmin->data[0][3];
- const float a1 = setup->vmax->data[slot][i] * setup->vmin->data[0][3];
+ const float a0 = setup->vmin->data[vertSlot][i] * setup->vmin->data[0][3];
+ const float a1 = setup->vmax->data[vertSlot][i] * setup->vmin->data[0][3];
const float da = a1 - a0;
const float dadx = da * setup->emaj.dx * setup->oneoverarea;
const float dady = da * setup->emaj.dy * setup->oneoverarea;
- setup->coef[slot].dadx[i] = dadx;
- setup->coef[slot].dady[i] = dady;
- setup->coef[slot].a0[i]
- = (setup->vmin->data[slot][i] -
- (dadx * (setup->vmin->data[0][0] - 0.5f) +
- dady * (setup->vmin->data[0][1] - 0.5f)));
-
+ coef->dadx[i] = dadx;
+ coef->dady[i] = dady;
+ coef->a0[i] = (setup->vmin->data[vertSlot][i] -
+ (dadx * (setup->vmin->data[0][0] - 0.5f) +
+ dady * (setup->vmin->data[0][1] - 0.5f)));
}
@@ -705,7 +771,8 @@ static INLINE void
setup_line_coefficients(struct setup_stage *setup, struct prim_header *prim)
{
const enum interp_mode *interp = setup->softpipe->vertex_info.interp_mode;
- unsigned slot, j;
+ const struct pipe_shader_state *fs = &setup->softpipe->fs->shader;
+ unsigned fragSlot;
/* use setup->vmin, vmax to point to vertices */
setup->vprovoke = prim->v[1];
@@ -720,31 +787,39 @@ setup_line_coefficients(struct setup_stage *setup, struct prim_header *prim)
/* z and w are done by linear interpolation:
*/
- line_linear_coeff(setup, 0, 2);
- line_linear_coeff(setup, 0, 3);
+ line_linear_coeff(setup, &setup->posCoef, 0, 2);
+ line_linear_coeff(setup, &setup->posCoef, 0, 3);
/* setup interpolation for all the remaining attributes:
*/
- for (slot = 1; slot < setup->quad.nr_attrs; slot++) {
- switch (interp[slot]) {
- case INTERP_CONSTANT:
- for (j = 0; j < NUM_CHANNELS; j++)
- const_coeff(setup, slot, j);
- break;
-
- case INTERP_LINEAR:
- for (j = 0; j < NUM_CHANNELS; j++)
- line_linear_coeff(setup, slot, j);
- break;
-
- case INTERP_PERSPECTIVE:
- for (j = 0; j < NUM_CHANNELS; j++)
- line_persp_coeff(setup, slot, j);
- break;
-
- default:
- /* invalid interp mode */
- assert(0);
+ for (fragSlot = 0; fragSlot < setup->quad.nr_attrs; fragSlot++) {
+ /* which vertex output maps to this fragment input: */
+ uint vertSlot = fs->input_map[fragSlot];
+
+ if (vertSlot == 0) {
+ /* special case: shader is reading gl_FragCoord */
+ setup_fragcoord_coeff(setup);
+ }
+ else {
+ uint j;
+ switch (interp[vertSlot]) {
+ case INTERP_CONSTANT:
+ for (j = 0; j < NUM_CHANNELS; j++)
+ const_coeff(setup, &setup->coef[fragSlot], vertSlot, j);
+ break;
+ case INTERP_LINEAR:
+ for (j = 0; j < NUM_CHANNELS; j++)
+ line_linear_coeff(setup, &setup->coef[fragSlot], vertSlot, j);
+ break;
+ case INTERP_PERSPECTIVE:
+ for (j = 0; j < NUM_CHANNELS; j++)
+ line_persp_coeff(setup, &setup->coef[fragSlot], vertSlot, j);
+ break;
+
+ default:
+ /* invalid interp mode */
+ assert(0);
+ }
}
}
}
@@ -910,14 +985,15 @@ setup_line(struct draw_stage *stage, struct prim_header *prim)
static void
-point_persp_coeff(struct setup_stage *setup, const struct vertex_header *vert,
- uint slot, uint i)
+point_persp_coeff(struct setup_stage *setup,
+ const struct vertex_header *vert,
+ struct tgsi_interp_coef *coef,
+ uint vertSlot, uint i)
{
- assert(slot < PIPE_MAX_SHADER_INPUTS);
assert(i <= 3);
- setup->coef[slot].dadx[i] = 0.0F;
- setup->coef[slot].dady[i] = 0.0F;
- setup->coef[slot].a0[i] = vert->data[slot][i] * vert->data[0][3];
+ coef->dadx[i] = 0.0F;
+ coef->dady[i] = 0.0F;
+ coef->a0[i] = vert->data[vertSlot][i] * vert->data[0][3];
}
@@ -930,6 +1006,7 @@ static void
setup_point(struct draw_stage *stage, struct prim_header *prim)
{
struct setup_stage *setup = setup_stage( stage );
+ const struct pipe_shader_state *fs = &setup->softpipe->fs->shader;
const enum interp_mode *interp = setup->softpipe->vertex_info.interp_mode;
const struct vertex_header *v0 = prim->v[0];
const int sizeAttr = setup->softpipe->psize_slot;
@@ -940,7 +1017,7 @@ setup_point(struct draw_stage *stage, struct prim_header *prim)
const boolean round = (boolean) setup->softpipe->rasterizer->point_smooth;
const float x = v0->data[0][0]; /* Note: data[0] is always position */
const float y = v0->data[0][1];
- unsigned slot, j;
+ uint fragSlot;
/* For points, all interpolants are constant-valued.
* However, for point sprites, we'll need to setup texcoords appropriately.
@@ -959,22 +1036,36 @@ setup_point(struct draw_stage *stage, struct prim_header *prim)
* probably should be ruled out on that basis.
*/
setup->vprovoke = prim->v[0];
- const_coeff(setup, 0, 2);
- const_coeff(setup, 0, 3);
- for (slot = 1; slot < setup->quad.nr_attrs; slot++) {
- switch (interp[slot]) {
- case INTERP_CONSTANT:
- /* fall-through */
- case INTERP_LINEAR:
- for (j = 0; j < NUM_CHANNELS; j++)
- const_coeff(setup, slot, j);
- break;
- case INTERP_PERSPECTIVE:
- for (j = 0; j < NUM_CHANNELS; j++)
- point_persp_coeff(setup, v0, slot, j);
- break;
- default:
- assert(0);
+
+ /* setup Z, W */
+ const_coeff(setup, &setup->posCoef, 0, 2);
+ const_coeff(setup, &setup->posCoef, 0, 3);
+
+ for (fragSlot = 0; fragSlot < setup->quad.nr_attrs; fragSlot++) {
+ /* which vertex output maps to this fragment input: */
+ uint vertSlot = fs->input_map[fragSlot];
+
+ if (vertSlot == 0) {
+ /* special case: shader is reading gl_FragCoord */
+ setup_fragcoord_coeff(setup);
+ }
+ else {
+ uint j;
+ switch (interp[vertSlot]) {
+ case INTERP_CONSTANT:
+ /* fall-through */
+ case INTERP_LINEAR:
+ for (j = 0; j < NUM_CHANNELS; j++)
+ const_coeff(setup, &setup->coef[fragSlot], vertSlot, j);
+ break;
+ case INTERP_PERSPECTIVE:
+ for (j = 0; j < NUM_CHANNELS; j++)
+ point_persp_coeff(setup, setup->vprovoke,
+ &setup->coef[fragSlot], vertSlot, j);
+ break;
+ default:
+ assert(0);
+ }
}
}
@@ -1108,9 +1199,12 @@ static void setup_begin( struct draw_stage *stage )
{
struct setup_stage *setup = setup_stage(stage);
struct softpipe_context *sp = setup->softpipe;
+ const struct pipe_shader_state *fs = &setup->softpipe->fs->shader;
setup->quad.nr_attrs = setup->softpipe->nr_frag_attrs;
+ setup->firstFpInput = fs->input_semantic_name[0];
+
sp->quad.first->begin(sp->quad.first);
}
@@ -1151,6 +1245,7 @@ struct draw_stage *sp_draw_render_stage( struct softpipe_context *softpipe )
setup->stage.destroy = render_destroy;
setup->quad.coef = setup->coef;
+ setup->quad.posCoef = &setup->posCoef;
return &setup->stage;
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-23 04:47:27 +0000