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-rw-r--r--src/mesa/drivers/dri/i965/brw_sf.c21
-rw-r--r--src/mesa/drivers/dri/i965/brw_sf.h6
-rw-r--r--src/mesa/drivers/dri/i965/brw_sf_emit.c135
3 files changed, 96 insertions, 66 deletions
diff --git a/src/mesa/drivers/dri/i965/brw_sf.c b/src/mesa/drivers/dri/i965/brw_sf.c
index 8e6839b8120..57d1c29ade1 100644
--- a/src/mesa/drivers/dri/i965/brw_sf.c
+++ b/src/mesa/drivers/dri/i965/brw_sf.c
@@ -46,7 +46,6 @@
static void compile_sf_prog( struct brw_context *brw,
struct brw_sf_prog_key *key )
{
- GLcontext *ctx = &brw->intel.ctx;
struct brw_sf_compile c;
const GLuint *program;
GLuint program_size;
@@ -69,20 +68,14 @@ static void compile_sf_prog( struct brw_context *brw,
/* Construct map from attribute number to position in the vertex.
*/
- for (i = idx = 0; i < VERT_RESULT_MAX; i++)
+ for (i = idx = 0; i < VERT_RESULT_MAX; i++) {
if (c.key.attrs & BITFIELD64_BIT(i)) {
c.attr_to_idx[i] = idx;
c.idx_to_attr[idx] = i;
- if (i >= VERT_RESULT_TEX0 && i <= VERT_RESULT_TEX7) {
- c.point_attrs[i].CoordReplace =
- ctx->Point.CoordReplace[i - VERT_RESULT_TEX0];
- }
- else {
- c.point_attrs[i].CoordReplace = GL_FALSE;
- }
idx++;
}
-
+ }
+
/* Which primitive? Or all three?
*/
switch (key->primitive) {
@@ -162,6 +155,14 @@ static void upload_sf_prog(struct brw_context *brw)
}
key.do_point_sprite = ctx->Point.PointSprite;
+ if (key.do_point_sprite) {
+ int i;
+
+ for (i = 0; i < 8; i++) {
+ if (ctx->Point.CoordReplace[i])
+ key.point_sprite_coord_replace |= (1 << i);
+ }
+ }
key.sprite_origin_lower_left = (ctx->Point.SpriteOrigin == GL_LOWER_LEFT);
/* _NEW_LIGHT */
key.do_flat_shading = (ctx->Light.ShadeModel == GL_FLAT);
diff --git a/src/mesa/drivers/dri/i965/brw_sf.h b/src/mesa/drivers/dri/i965/brw_sf.h
index 0ba731fac99..a0680a56f2c 100644
--- a/src/mesa/drivers/dri/i965/brw_sf.h
+++ b/src/mesa/drivers/dri/i965/brw_sf.h
@@ -46,6 +46,7 @@
struct brw_sf_prog_key {
GLbitfield64 attrs;
+ uint8_t point_sprite_coord_replace;
GLuint primitive:2;
GLuint do_twoside_color:1;
GLuint do_flat_shading:1;
@@ -56,10 +57,6 @@ struct brw_sf_prog_key {
GLuint pad:24;
};
-struct brw_sf_point_tex {
- GLboolean CoordReplace;
-};
-
struct brw_sf_compile {
struct brw_compile func;
struct brw_sf_prog_key key;
@@ -100,7 +97,6 @@ struct brw_sf_compile {
GLubyte attr_to_idx[VERT_RESULT_MAX];
GLubyte idx_to_attr[VERT_RESULT_MAX];
- struct brw_sf_point_tex point_attrs[VERT_RESULT_MAX];
};
diff --git a/src/mesa/drivers/dri/i965/brw_sf_emit.c b/src/mesa/drivers/dri/i965/brw_sf_emit.c
index bb08055e3bb..56f7c986e78 100644
--- a/src/mesa/drivers/dri/i965/brw_sf_emit.c
+++ b/src/mesa/drivers/dri/i965/brw_sf_emit.c
@@ -354,6 +354,33 @@ static GLboolean calculate_masks( struct brw_sf_compile *c,
return is_last_attr;
}
+/* Calculates the predicate control for which channels of a reg
+ * (containing 2 attrs) to do point sprite coordinate replacement on.
+ */
+static uint16_t
+calculate_point_sprite_mask(struct brw_sf_compile *c, GLuint reg)
+{
+ int attr1, attr2;
+ uint16_t pc = 0;
+
+ attr1 = c->idx_to_attr[reg * 2];
+ if (attr1 >= VERT_RESULT_TEX0 && attr1 <= VERT_RESULT_TEX7) {
+ if (c->key.point_sprite_coord_replace & (1 << (attr1 - VERT_RESULT_TEX0)))
+ pc |= 0x0f;
+ }
+
+ if (reg * 2 + 1 < c->nr_setup_attrs) {
+ attr2 = c->idx_to_attr[reg * 2 + 1];
+ if (attr2 >= VERT_RESULT_TEX0 && attr2 <= VERT_RESULT_TEX7) {
+ if (c->key.point_sprite_coord_replace & (1 << (attr2 -
+ VERT_RESULT_TEX0)))
+ pc |= 0xf0;
+ }
+ }
+
+ return pc;
+}
+
void brw_emit_tri_setup( struct brw_sf_compile *c, GLboolean allocate)
@@ -529,22 +556,27 @@ void brw_emit_point_sprite_setup( struct brw_sf_compile *c, GLboolean allocate)
copy_z_inv_w(c);
for (i = 0; i < c->nr_setup_regs; i++)
{
- struct brw_sf_point_tex *tex = &c->point_attrs[c->idx_to_attr[2*i]];
struct brw_reg a0 = offset(c->vert[0], i);
- GLushort pc, pc_persp, pc_linear;
+ GLushort pc, pc_persp, pc_linear, pc_coord_replace;
GLboolean last = calculate_masks(c, i, &pc, &pc_persp, &pc_linear);
-
- if (pc_persp)
- {
- if (!tex->CoordReplace) {
- brw_set_predicate_control_flag_value(p, pc_persp);
- brw_MUL(p, a0, a0, c->inv_w[0]);
- }
+
+ pc_coord_replace = calculate_point_sprite_mask(c, i);
+ pc_persp &= ~pc_coord_replace;
+
+ if (pc_persp) {
+ brw_set_predicate_control_flag_value(p, pc_persp);
+ brw_MUL(p, a0, a0, c->inv_w[0]);
}
- if (tex->CoordReplace) {
- /* Caculate 1.0/PointWidth */
- brw_math(&c->func,
+ /* Point sprite coordinate replacement: A texcoord with this
+ * enabled gets replaced with the value (x, y, 0, 1) where x and
+ * y vary from 0 to 1 across the horizontal and vertical of the
+ * point.
+ */
+ if (pc_coord_replace) {
+ brw_set_predicate_control_flag_value(p, pc_coord_replace);
+ /* Caculate 1.0/PointWidth */
+ brw_math(&c->func,
c->tmp,
BRW_MATH_FUNCTION_INV,
BRW_MATH_SATURATE_NONE,
@@ -553,50 +585,51 @@ void brw_emit_point_sprite_setup( struct brw_sf_compile *c, GLboolean allocate)
BRW_MATH_DATA_SCALAR,
BRW_MATH_PRECISION_FULL);
- if (c->key.sprite_origin_lower_left) {
- brw_MUL(p, c->m1Cx, c->tmp, c->inv_w[0]);
- brw_MOV(p, vec1(suboffset(c->m1Cx, 1)), brw_imm_f(0.0));
- brw_MUL(p, c->m2Cy, c->tmp, negate(c->inv_w[0]));
- brw_MOV(p, vec1(suboffset(c->m2Cy, 0)), brw_imm_f(0.0));
- } else {
- brw_MUL(p, c->m1Cx, c->tmp, c->inv_w[0]);
- brw_MOV(p, vec1(suboffset(c->m1Cx, 1)), brw_imm_f(0.0));
- brw_MUL(p, c->m2Cy, c->tmp, c->inv_w[0]);
- brw_MOV(p, vec1(suboffset(c->m2Cy, 0)), brw_imm_f(0.0));
- }
- } else {
- brw_MOV(p, c->m1Cx, brw_imm_ud(0));
- brw_MOV(p, c->m2Cy, brw_imm_ud(0));
- }
+ brw_set_access_mode(p, BRW_ALIGN_16);
- {
- brw_set_predicate_control_flag_value(p, pc);
- if (tex->CoordReplace) {
- if (c->key.sprite_origin_lower_left) {
- brw_MUL(p, c->m3C0, c->inv_w[0], brw_imm_f(1.0));
- brw_MOV(p, vec1(suboffset(c->m3C0, 0)), brw_imm_f(0.0));
- }
- else
- brw_MOV(p, c->m3C0, brw_imm_f(0.0));
+ /* dA/dx, dA/dy */
+ brw_MOV(p, c->m1Cx, brw_imm_f(0.0));
+ brw_MOV(p, c->m2Cy, brw_imm_f(0.0));
+ brw_MOV(p, brw_writemask(c->m1Cx, WRITEMASK_X), c->tmp);
+ if (c->key.sprite_origin_lower_left) {
+ brw_MOV(p, brw_writemask(c->m2Cy, WRITEMASK_Y), negate(c->tmp));
} else {
- brw_MOV(p, c->m3C0, a0); /* constant value */
+ brw_MOV(p, brw_writemask(c->m2Cy, WRITEMASK_Y), c->tmp);
}
- /* Copy m0..m3 to URB.
- */
- brw_urb_WRITE(p,
- brw_null_reg(),
- 0,
- brw_vec8_grf(0, 0),
- 0, /* allocate */
- 1, /* used */
- 4, /* msg len */
- 0, /* response len */
- last, /* eot */
- last, /* writes complete */
- i*4, /* urb destination offset */
- BRW_URB_SWIZZLE_TRANSPOSE);
+ /* attribute constant offset */
+ brw_MOV(p, c->m3C0, brw_imm_f(0.0));
+ if (c->key.sprite_origin_lower_left) {
+ brw_MOV(p, brw_writemask(c->m3C0, WRITEMASK_YW), brw_imm_f(1.0));
+ } else {
+ brw_MOV(p, brw_writemask(c->m3C0, WRITEMASK_W), brw_imm_f(1.0));
+ }
+
+ brw_set_access_mode(p, BRW_ALIGN_1);
}
+
+ if (pc & ~pc_coord_replace) {
+ brw_set_predicate_control_flag_value(p, pc & ~pc_coord_replace);
+ brw_MOV(p, c->m1Cx, brw_imm_ud(0));
+ brw_MOV(p, c->m2Cy, brw_imm_ud(0));
+ brw_MOV(p, c->m3C0, a0); /* constant value */
+ }
+
+
+ brw_set_predicate_control_flag_value(p, pc);
+ /* Copy m0..m3 to URB. */
+ brw_urb_WRITE(p,
+ brw_null_reg(),
+ 0,
+ brw_vec8_grf(0, 0),
+ 0, /* allocate */
+ 1, /* used */
+ 4, /* msg len */
+ 0, /* response len */
+ last, /* eot */
+ last, /* writes complete */
+ i*4, /* urb destination offset */
+ BRW_URB_SWIZZLE_TRANSPOSE);
}
}
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-22 05:31:58 +0000