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r300g: add generating texture coordinates for point sprites

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[airlied -
	Convert sprite coord index to a per-coord enable bit
	set the rasteriser block up correctly for point sprites.

The inputs to the RS hw block change for sprite coords, so fix them up
properly - this fixes piglit point-sprite test.
]

Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Marek Olšák 2009-12-24 21:29:41 +01:00 • committed by Dave Airlie
parent 6917ef10f2
commit 745c4b5685
5 changed files with 85 additions and 21 deletions
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13
src/gallium/drivers/r300/r300_context.h
View file

@ -106,6 +106,16 @@ struct r300_rs_state {
uint32_t color_control; /* R300_GA_COLOR_CONTROL: 0x4278 */
uint32_t polygon_mode; /* R300_GA_POLY_MODE: 0x4288 */
uint32_t clip_rule; /* R300_SC_CLIP_RULE: 0x43D0 */
/* Specifies top of Raster pipe specific enable controls,
* i.e. texture coordinates stuffing for points, lines, triangles */
uint32_t stuffing_enable; /* R300_GB_ENABLE: 0x4008 */
/* Point sprites texture coordinates, 0: lower left, 1: upper right */
float point_texcoord_left; /* R300_GA_POINT_S0: 0x4200 */
float point_texcoord_bottom; /* R300_GA_POINT_T0: 0x4204 */
float point_texcoord_right; /* R300_GA_POINT_S1: 0x4208 */
float point_texcoord_top; /* R300_GA_POINT_T1: 0x420c */
};
struct r300_rs_block {
@ -420,6 +430,9 @@ struct r300_context {
/* Whether the two-sided stencil ref value is different for front and
* back faces, and fallback should be used for r3xx-r4xx. */
boolean stencil_ref_bf_fallback;
/* Point sprites texcoord index, 1 bit per texcoord */
int sprite_coord_enable;
/* upload managers */
struct u_upload_mgr *upload_vb;
struct u_upload_mgr *upload_ib;

6
src/gallium/drivers/r300/r300_emit.c
View file

@ -748,6 +748,12 @@ void r300_emit_rs_state(struct r300_context* r300, unsigned size, void* state)
OUT_CS_REG(R300_GA_LINE_STIPPLE_VALUE, rs->line_stipple_value);
OUT_CS_REG(R300_GA_POLY_MODE, rs->polygon_mode);
OUT_CS_REG(R300_SC_CLIP_RULE, rs->clip_rule);
OUT_CS_REG(R300_GB_ENABLE, rs->stuffing_enable);
OUT_CS_REG_SEQ(R300_GA_POINT_S0, 4);
OUT_CS_32F(rs->point_texcoord_left);
OUT_CS_32F(rs->point_texcoord_bottom);
OUT_CS_32F(rs->point_texcoord_right);
OUT_CS_32F(rs->point_texcoord_top);
END_CS;
}

34
src/gallium/drivers/r300/r300_state.c
View file

@ -757,6 +757,7 @@ static void* r300_create_rs_state(struct pipe_context* pipe,
const struct pipe_rasterizer_state* state)
{
struct r300_rs_state* rs = CALLOC_STRUCT(r300_rs_state);
int i;
/* Copy rasterizer state for Draw. */
rs->rs = *state;
@ -851,6 +852,30 @@ static void* r300_create_rs_state(struct pipe_context* pipe,
rs->clip_rule = state->scissor ? 0xAAAA : 0xFFFF;
/* Point sprites */
if (state->sprite_coord_enable) {
rs->stuffing_enable = R300_GB_POINT_STUFF_ENABLE;
for (i = 0; i < 8; i++) {
if (state->sprite_coord_enable & (1 << i))
rs->stuffing_enable |=
R300_GB_TEX_STR << (R300_GB_TEX0_SOURCE_SHIFT + (i*2));
}
rs->point_texcoord_left = 0.0f;
rs->point_texcoord_right = 1.0f;
switch (state->sprite_coord_mode) {
case PIPE_SPRITE_COORD_UPPER_LEFT:
rs->point_texcoord_top = 0.0f;
rs->point_texcoord_bottom = 1.0f;
break;
case PIPE_SPRITE_COORD_LOWER_LEFT:
rs->point_texcoord_top = 1.0f;
rs->point_texcoord_bottom = 0.0f;
break;
}
}
return (void*)rs;
}
@ -859,6 +884,7 @@ static void r300_bind_rs_state(struct pipe_context* pipe, void* state)
{
struct r300_context* r300 = r300_context(pipe);
struct r300_rs_state* rs = (struct r300_rs_state*)state;
int last_sprite_coord_enable = r300->sprite_coord_enable;
if (r300->draw) {
draw_flush(r300->draw);
@ -867,12 +893,18 @@ static void r300_bind_rs_state(struct pipe_context* pipe, void* state)
if (rs) {
r300->polygon_offset_enabled = rs->rs.offset_cw || rs->rs.offset_ccw;
r300->sprite_coord_enable = rs->rs.sprite_coord_enable;
} else {
r300->polygon_offset_enabled = FALSE;
r300->sprite_coord_enable = 0;
}
UPDATE_STATE(state, r300->rs_state);
r300->rs_state.size = 19 + (r300->polygon_offset_enabled ? 5 : 0);
r300->rs_state.size = 26 + (r300->polygon_offset_enabled ? 5 : 0);
if (last_sprite_coord_enable != r300->sprite_coord_enable) {
r300->rs_block_state.dirty = TRUE;
}
}
/* Free rasterizer state. */

40
src/gallium/drivers/r300/r300_state_derived.c
View file

@ -37,6 +37,12 @@
/* r300_state_derived: Various bits of state which are dependent upon
* currently bound CSO data. */
enum r300_rs_swizzle {
SWIZ_XYZW = 0,
SWIZ_X001,
SWIZ_XY01,
};
static void r300_draw_emit_attrib(struct r300_context* r300,
enum attrib_emit emit,
enum interp_mode interp,
@ -180,14 +186,20 @@ static void r300_rs_col_write(struct r300_rs_block* rs, int id, int fp_offset)
}
static void r300_rs_tex(struct r300_rs_block* rs, int id, int ptr,
boolean swizzle_X001)
enum r300_rs_swizzle swiz)
{
if (swizzle_X001) {
if (swiz == SWIZ_X001) {
rs->ip[id] |= R300_RS_TEX_PTR(ptr*4) |
R300_RS_SEL_S(R300_RS_SEL_C0) |
R300_RS_SEL_T(R300_RS_SEL_K0) |
R300_RS_SEL_R(R300_RS_SEL_K0) |
R300_RS_SEL_Q(R300_RS_SEL_K1);
} else if (swiz == SWIZ_XY01) {
rs->ip[id] |= R300_RS_TEX_PTR(ptr*4) |
R300_RS_SEL_S(R300_RS_SEL_C0) |
R300_RS_SEL_T(R300_RS_SEL_C1) |
R300_RS_SEL_R(R300_RS_SEL_K0) |
R300_RS_SEL_Q(R300_RS_SEL_K1);
} else {
rs->ip[id] |= R300_RS_TEX_PTR(ptr*4) |
R300_RS_SEL_S(R300_RS_SEL_C0) |
@ -223,15 +235,20 @@ static void r500_rs_col_write(struct r300_rs_block* rs, int id, int fp_offset)
}
static void r500_rs_tex(struct r300_rs_block* rs, int id, int ptr,
boolean swizzle_X001)
enum r300_rs_swizzle swiz)
{
int rs_tex_comp = ptr*4;
if (swizzle_X001) {
if (swiz == SWIZ_X001) {
rs->ip[id] |= R500_RS_SEL_S(rs_tex_comp) |
R500_RS_SEL_T(R500_RS_IP_PTR_K0) |
R500_RS_SEL_R(R500_RS_IP_PTR_K0) |
R500_RS_SEL_Q(R500_RS_IP_PTR_K1);
} else if (swiz == SWIZ_XY01) {
rs->ip[id] |= R500_RS_SEL_S(rs_tex_comp) |
R500_RS_SEL_T(rs_tex_comp + 1) |
R500_RS_SEL_R(R500_RS_IP_PTR_K0) |
R500_RS_SEL_Q(R500_RS_IP_PTR_K1);
} else {
rs->ip[id] |= R500_RS_SEL_S(rs_tex_comp) |
R500_RS_SEL_T(rs_tex_comp + 1) |
@ -260,7 +277,7 @@ static void r300_update_rs_block(struct r300_context* r300,
int i, col_count = 0, tex_count = 0, fp_offset = 0, count;
void (*rX00_rs_col)(struct r300_rs_block*, int, int, boolean);
void (*rX00_rs_col_write)(struct r300_rs_block*, int, int);
void (*rX00_rs_tex)(struct r300_rs_block*, int, int, boolean);
void (*rX00_rs_tex)(struct r300_rs_block*, int, int, enum r300_rs_swizzle);
void (*rX00_rs_tex_write)(struct r300_rs_block*, int, int);
boolean any_bcolor_used = vs_outputs->bcolor[0] != ATTR_UNUSED ||
vs_outputs->bcolor[1] != ATTR_UNUSED;
@ -302,14 +319,19 @@ static void r300_update_rs_block(struct r300_context* r300,
/* Rasterize texture coordinates. */
for (i = 0; i < ATTR_GENERIC_COUNT; i++) {
if (vs_outputs->generic[i] != ATTR_UNUSED) {
bool sprite_coord = !!(r300->sprite_coord_enable & (1 << i));
if (vs_outputs->generic[i] != ATTR_UNUSED || sprite_coord) {
/* Always rasterize if it's written by the VS,
* otherwise it locks up. */
rX00_rs_tex(&rs, tex_count, tex_count, FALSE);
rX00_rs_tex(&rs, tex_count, tex_count,
sprite_coord ? SWIZ_XY01 : SWIZ_XYZW);
/* Write it to the FS input register if it's used by the FS. */
if (fs_inputs->generic[i] != ATTR_UNUSED) {
rX00_rs_tex_write(&rs, tex_count, fp_offset);
if (sprite_coord)
debug_printf("r300: SpriteCoord (generic index %i) is being written to reg %i\n", i, fp_offset);
fp_offset++;
}
tex_count++;
@ -326,7 +348,7 @@ static void r300_update_rs_block(struct r300_context* r300,
if (vs_outputs->fog != ATTR_UNUSED) {
/* Always rasterize if it's written by the VS,
* otherwise it locks up. */
rX00_rs_tex(&rs, tex_count, tex_count, TRUE);
rX00_rs_tex(&rs, tex_count, tex_count, SWIZ_X001);
/* Write it to the FS input register if it's used by the FS. */
if (fs_inputs->fog != ATTR_UNUSED) {
@ -345,7 +367,7 @@ static void r300_update_rs_block(struct r300_context* r300,
/* Rasterize WPOS. */
/* If the FS doesn't need it, it's not written by the VS. */
if (vs_outputs->wpos != ATTR_UNUSED && fs_inputs->wpos != ATTR_UNUSED) {
rX00_rs_tex(&rs, tex_count, tex_count, FALSE);
rX00_rs_tex(&rs, tex_count, tex_count, SWIZ_XYZW);
rX00_rs_tex_write(&rs, tex_count, fp_offset);
fp_offset++;

13
src/gallium/drivers/r300/r300_state_invariant.c
View file

@ -44,13 +44,9 @@ void r300_emit_invariant_state(struct r300_context* r300,
struct r300_capabilities* caps = &r300_screen(r300->context.screen)->caps;
CS_LOCALS(r300);
BEGIN_CS(14 + (caps->has_tcl ? 2: 0));
BEGIN_CS(12 + (caps->has_tcl ? 2: 0));
/*** Graphics Backend (GB) ***/
/* Various GB enables */
OUT_CS_REG(R300_GB_ENABLE, R300_GB_POINT_STUFF_ENABLE |
R300_GB_LINE_STUFF_ENABLE |
R300_GB_TRIANGLE_STUFF_ENABLE);
/* Subpixel multisampling for AA
* These are commented out because glisse's CS checker doesn't like them.
* I presume these will be re-enabled later.
@ -78,7 +74,7 @@ void r300_emit_invariant_state(struct r300_context* r300,
END_CS;
/* XXX unsorted stuff from surface_fill */
BEGIN_CS(42 + (caps->has_tcl ? 7 : 0) +
BEGIN_CS(38 + (caps->has_tcl ? 7 : 0) +
(caps->family >= CHIP_FAMILY_RV350 ? 4 : 0));
if (caps->has_tcl) {
@ -90,11 +86,6 @@ void r300_emit_invariant_state(struct r300_context* r300,
OUT_CS_32F(1.0);
OUT_CS_32F(1.0);
}
/* XXX point tex stuffing */
OUT_CS_REG_SEQ(R300_GA_POINT_S0, 1);
OUT_CS_32F(0.0);
OUT_CS_REG_SEQ(R300_GA_POINT_S1, 1);
OUT_CS_32F(1.0);
/* XXX line tex stuffing */
OUT_CS_REG_SEQ(R300_GA_LINE_S0, 1);
OUT_CS_32F(0.0);