st/mesa: add support for advanced blend when fb can be fetched from
This implements support for emitting FBFETCH ops, using the existing
lowering pass for advanced blend logic, and disabling hw blend when
advanced blending is enabled.
Signed-off-by: Ilia Mirkin <imirkin@alum.mit.edu>
Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com>
diff --git a/src/mesa/state_tracker/st_atom_blend.c b/src/mesa/state_tracker/st_atom_blend.c
index b8d65bd..f76cfab 100644
--- a/src/mesa/state_tracker/st_atom_blend.c
+++ b/src/mesa/state_tracker/st_atom_blend.c
@@ -205,7 +205,7 @@
blend->logicop_enable = 1;
blend->logicop_func = translate_logicop(ctx->Color.LogicOp);
}
- else if (ctx->Color.BlendEnabled) {
+ else if (ctx->Color.BlendEnabled && !ctx->Color._AdvancedBlendMode) {
/* blending enabled */
for (i = 0, j = 0; i < num_state; i++) {
diff --git a/src/mesa/state_tracker/st_cb_texturebarrier.c b/src/mesa/state_tracker/st_cb_texturebarrier.c
index 7fd1cbd..29cd37c 100644
--- a/src/mesa/state_tracker/st_cb_texturebarrier.c
+++ b/src/mesa/state_tracker/st_cb_texturebarrier.c
@@ -55,6 +55,18 @@
/**
+ * Called via ctx->Driver.BlendBarrier()
+ */
+static void
+st_BlendBarrier(struct gl_context *ctx)
+{
+ struct pipe_context *pipe = st_context(ctx)->pipe;
+
+ pipe->texture_barrier(pipe, PIPE_TEXTURE_BARRIER_FRAMEBUFFER);
+}
+
+
+/**
* Called via ctx->Driver.MemoryBarrier()
*/
static void
@@ -118,5 +130,6 @@
void st_init_texture_barrier_functions(struct dd_function_table *functions)
{
functions->TextureBarrier = st_TextureBarrier;
+ functions->BlendBarrier = st_BlendBarrier;
functions->MemoryBarrier = st_MemoryBarrier;
}
diff --git a/src/mesa/state_tracker/st_extensions.c b/src/mesa/state_tracker/st_extensions.c
index 7ff5716..5ccc5d9 100644
--- a/src/mesa/state_tracker/st_extensions.c
+++ b/src/mesa/state_tracker/st_extensions.c
@@ -616,6 +616,8 @@
{ o(ARB_transform_feedback2), PIPE_CAP_STREAM_OUTPUT_PAUSE_RESUME },
{ o(ARB_transform_feedback3), PIPE_CAP_STREAM_OUTPUT_INTERLEAVE_BUFFERS },
+ { o(KHR_blend_equation_advanced), PIPE_CAP_TGSI_FS_FBFETCH },
+
{ o(EXT_blend_equation_separate), PIPE_CAP_BLEND_EQUATION_SEPARATE },
{ o(EXT_depth_bounds_test), PIPE_CAP_DEPTH_BOUNDS_TEST },
{ o(EXT_draw_buffers2), PIPE_CAP_INDEP_BLEND_ENABLE },
diff --git a/src/mesa/state_tracker/st_glsl_to_tgsi.cpp b/src/mesa/state_tracker/st_glsl_to_tgsi.cpp
index 9356707..4bdb3a6 100644
--- a/src/mesa/state_tracker/st_glsl_to_tgsi.cpp
+++ b/src/mesa/state_tracker/st_glsl_to_tgsi.cpp
@@ -2520,10 +2520,19 @@
else
decl->size = type_size(var->type);
- entry = new(mem_ctx) variable_storage(var,
- PROGRAM_OUTPUT,
- decl->mesa_index,
- decl->array_id);
+ if (var->data.fb_fetch_output) {
+ st_dst_reg dst = st_dst_reg(get_temp(var->type));
+ st_src_reg src = st_src_reg(PROGRAM_OUTPUT, decl->mesa_index,
+ var->type, component, decl->array_id);
+ emit_asm(NULL, TGSI_OPCODE_FBFETCH, dst, src);
+ entry = new(mem_ctx) variable_storage(var, dst.file, dst.index,
+ dst.array_id);
+ } else {
+ entry = new(mem_ctx) variable_storage(var,
+ PROGRAM_OUTPUT,
+ decl->mesa_index,
+ decl->array_id);
+ }
entry->component = component;
this->variables.push_tail(entry);
@@ -6855,8 +6864,9 @@
if (prog->_LinkedShaders[i] == NULL)
continue;
- exec_list *ir = prog->_LinkedShaders[i]->ir;
- gl_shader_stage stage = prog->_LinkedShaders[i]->Stage;
+ struct gl_linked_shader *shader = prog->_LinkedShaders[i];
+ exec_list *ir = shader->ir;
+ gl_shader_stage stage = shader->Stage;
const struct gl_shader_compiler_options *options =
&ctx->Const.ShaderCompilerOptions[stage];
enum pipe_shader_type ptarget = st_shader_stage_to_ptarget(stage);
@@ -6872,7 +6882,7 @@
*/
if (options->EmitNoIndirectInput || options->EmitNoIndirectOutput ||
options->EmitNoIndirectTemp || options->EmitNoIndirectUniform) {
- lower_variable_index_to_cond_assign(prog->_LinkedShaders[i]->Stage, ir,
+ lower_variable_index_to_cond_assign(stage, ir,
options->EmitNoIndirectInput,
options->EmitNoIndirectOutput,
options->EmitNoIndirectTemp,
@@ -6902,6 +6912,10 @@
if (!pscreen->get_param(pscreen, PIPE_CAP_TEXTURE_GATHER_OFFSETS))
lower_offset_arrays(ir);
do_mat_op_to_vec(ir);
+
+ if (stage == MESA_SHADER_FRAGMENT)
+ lower_blend_equation_advanced(shader);
+
lower_instructions(ir,
MOD_TO_FLOOR |
DIV_TO_MUL_RCP |
