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radeonsi: implement GL_SAMPLE_ALPHA_TO_ONE

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Reviewed-by: Michel Dänzer <michel.daenzer@amd.com>
This commit is contained in:
Marek Olšák 2013-07-30 22:29:29 +02:00
parent 07955d4f2b
commit 6d4755a4d7
5 changed files with 30 additions and 1 deletions
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1
src/gallium/drivers/radeonsi/radeonsi_pipe.h
View file

@ -154,6 +154,7 @@ struct r600_context {
struct si_vertex_element *vertex_elements;
struct pipe_framebuffer_state framebuffer;
unsigned fb_log_samples;
unsigned fb_cb0_is_integer;
unsigned pa_sc_line_stipple;
unsigned pa_su_sc_mode_cntl;
/* for saving when using blitter */

14
src/gallium/drivers/radeonsi/radeonsi_shader.c
View file

@ -561,6 +561,17 @@ static void si_alpha_test(struct lp_build_tgsi_context *bld_base,
}
}
static void si_alpha_to_one(struct lp_build_tgsi_context *bld_base,
unsigned index)
{
struct si_shader_context *si_shader_ctx = si_shader_context(bld_base);
/* set alpha to one */
LLVMBuildStore(bld_base->base.gallivm->builder,
bld_base->base.one,
si_shader_ctx->radeon_bld.soa.outputs[index][3]);
}
static void si_llvm_emit_clipvertex(struct lp_build_tgsi_context * bld_base,
LLVMValueRef (*pos)[9], unsigned index)
{
@ -707,6 +718,9 @@ handle_semantic:
param_count++;
} else {
target = V_008DFC_SQ_EXP_MRT + color_count;
if (si_shader_ctx->shader->key.ps.alpha_to_one) {
si_alpha_to_one(bld_base, index);
}
if (color_count == 0 &&
si_shader_ctx->shader->key.ps.alpha_func != PIPE_FUNC_ALWAYS)
si_alpha_test(bld_base, index);

1
src/gallium/drivers/radeonsi/radeonsi_shader.h
View file

@ -124,6 +124,7 @@ union si_shader_key {
unsigned color_two_side:1;
unsigned alpha_func:3;
unsigned flatshade:1;
unsigned alpha_to_one:1;
float alpha_ref;
} ps;
struct {

12
src/gallium/drivers/radeonsi/si_state.c
View file

@ -255,6 +255,8 @@ static void *si_create_blend_state_mode(struct pipe_context *ctx,
if (blend == NULL)
return NULL;
blend->alpha_to_one = state->alpha_to_one;
color_control = S_028808_MODE(mode);
if (state->logicop_enable) {
color_control |= S_028808_ROP3(state->logicop_func | (state->logicop_func << 4));
@ -520,6 +522,7 @@ static void *si_create_rs_state(struct pipe_context *ctx,
}
rs->two_side = state->light_twoside;
rs->multisample_enable = state->multisample;
rs->clip_plane_enable = state->clip_plane_enable;
polygon_dual_mode = (state->fill_front != PIPE_POLYGON_MODE_FILL ||
@ -2247,6 +2250,8 @@ static void si_set_framebuffer_state(struct pipe_context *ctx,
si_set_msaa_state(rctx, pm4, nr_samples);
rctx->fb_log_samples = util_logbase2(nr_samples);
rctx->fb_cb0_is_integer = state->nr_cbufs &&
util_format_is_pure_integer(state->cbufs[0]->format);
si_pm4_set_state(rctx, framebuffer, pm4);
si_update_fb_rs_state(rctx);
@ -2281,9 +2286,16 @@ static INLINE void si_shader_selector_key(struct pipe_context *ctx,
if (sel->fs_write_all)
key->ps.nr_cbufs = rctx->framebuffer.nr_cbufs;
key->ps.export_16bpc = rctx->export_16bpc;
if (rctx->queued.named.rasterizer) {
key->ps.color_two_side = rctx->queued.named.rasterizer->two_side;
key->ps.flatshade = rctx->queued.named.rasterizer->flatshade;
if (rctx->queued.named.blend) {
key->ps.alpha_to_one = rctx->queued.named.blend->alpha_to_one &&
rctx->queued.named.rasterizer->multisample_enable &&
!rctx->fb_cb0_is_integer;
}
}
if (rctx->queued.named.dsa) {
key->ps.alpha_func = rctx->queued.named.dsa->alpha_func;

3
src/gallium/drivers/radeonsi/si_state.h
View file

@ -40,7 +40,7 @@ struct si_atom {
struct si_state_blend {
struct si_pm4_state pm4;
uint32_t cb_target_mask;
uint32_t cb_color_control;
bool alpha_to_one;
};
struct si_state_viewport {
@ -52,6 +52,7 @@ struct si_state_rasterizer {
struct si_pm4_state pm4;
bool flatshade;
bool two_side;
bool multisample_enable;
unsigned sprite_coord_enable;
unsigned pa_sc_line_stipple;
unsigned pa_su_sc_mode_cntl;