#include <stdio.h>
#include "pan_blend_shaders.h"
+#include "pan_util.h"
#include "midgard/midgard_compile.h"
#include "compiler/nir/nir_builder.h"
-//#include "gallium/auxiliary/nir/nir_lower_blend.h"
+#include "nir/nir_lower_blend.h"
+#include "gallium/auxiliary/util/u_blend.h"
+#include "util/u_memory.h"
/*
* Implements the command stream portion of programmatic blend shaders.
* (compilation).
*/
-static nir_ssa_def *
-nir_blending_f(const struct pipe_rt_blend_state *blend, nir_builder *b,
- nir_ssa_def *s_src, nir_ssa_def *s_dst, nir_ssa_def *s_con)
+static nir_lower_blend_options
+nir_make_options(const struct pipe_blend_state *blend, unsigned nr_cbufs)
{
- /* Stub, to be replaced by the real implementation when that is
- * upstream (pending on a rewrite to be Gallium agnostic) */
+ nir_lower_blend_options options;
+
+ for (unsigned i = 0; i < nr_cbufs; ++i) {
+ /* If blend is disabled, we just use replace mode */
+
+ nir_lower_blend_channel rgb = {
+ .func = BLEND_FUNC_ADD,
+ .src_factor = BLEND_FACTOR_ZERO,
+ .invert_src_factor = true,
+ .dst_factor = BLEND_FACTOR_ZERO,
+ .invert_dst_factor = false
+ };
+
+ nir_lower_blend_channel alpha = rgb;
+
+ if (blend->rt[i].blend_enable) {
+ rgb.func = util_blend_func_to_shader(blend->rt[i].rgb_func);
+ rgb.src_factor = util_blend_factor_to_shader(blend->rt[i].rgb_src_factor);
+ rgb.dst_factor = util_blend_factor_to_shader(blend->rt[i].rgb_dst_factor);
+ rgb.invert_src_factor = util_blend_factor_is_inverted(blend->rt[i].rgb_src_factor);
+ rgb.invert_dst_factor = util_blend_factor_is_inverted(blend->rt[i].rgb_dst_factor);
+
+ alpha.func = util_blend_func_to_shader(blend->rt[i].alpha_func);
+ alpha.src_factor = util_blend_factor_to_shader(blend->rt[i].alpha_src_factor);
+ alpha.dst_factor = util_blend_factor_to_shader(blend->rt[i].alpha_dst_factor);
+ alpha.invert_src_factor = util_blend_factor_is_inverted(blend->rt[i].alpha_src_factor);
+ alpha.invert_dst_factor = util_blend_factor_is_inverted(blend->rt[i].alpha_dst_factor);
+ }
+
+ options.rt[i].rgb = rgb;
+ options.rt[i].alpha = alpha;
+
+ options.rt[i].colormask = blend->rt[i].colormask;
+ }
- return s_src;
+ return options;
}
-void
-panfrost_make_blend_shader(struct panfrost_context *ctx, struct panfrost_blend_state *cso, const struct pipe_blend_color *blend_color)
+struct panfrost_blend_shader
+panfrost_compile_blend_shader(
+ struct panfrost_context *ctx,
+ struct pipe_blend_state *cso,
+ enum pipe_format format)
{
- const struct pipe_rt_blend_state *blend = &cso->base.rt[0];
- mali_ptr *out = &cso->blend_shader;
+ struct panfrost_screen *screen = pan_screen(ctx->base.screen);
+ struct panfrost_blend_shader res;
+
+ res.ctx = ctx;
/* Build the shader */
/* Create the blend variables */
nir_variable *c_src = nir_variable_create(shader, nir_var_shader_in, glsl_vector_type(GLSL_TYPE_FLOAT, 4), "gl_Color");
- nir_variable *c_dst = nir_variable_create(shader, nir_var_shader_in, glsl_vector_type(GLSL_TYPE_FLOAT, 4), "gl_SecondaryColor");
nir_variable *c_out = nir_variable_create(shader, nir_var_shader_out, glsl_vector_type(GLSL_TYPE_FLOAT, 4), "gl_FragColor");
- nir_variable *c_con = nir_variable_create(shader, nir_var_uniform, glsl_vector_type(GLSL_TYPE_FLOAT, 4), "constant");
c_src->data.location = VARYING_SLOT_COL0;
- c_dst->data.location = VARYING_SLOT_COL1;
c_out->data.location = FRAG_RESULT_COLOR;
/* Setup nir_builder */
/* Setup inputs */
nir_ssa_def *s_src = nir_load_var(b, c_src);
- nir_ssa_def *s_dst = nir_load_var(b, c_dst);
- nir_ssa_def *s_con = nir_load_var(b, c_con);
/* Build a trivial blend shader */
- nir_store_var(b, c_out, nir_blending_f(blend, b, s_src, s_dst, s_con), 0xFF);
+ nir_store_var(b, c_out, s_src, 0xFF);
- nir_print_shader(shader, stdout);
+ nir_lower_blend_options options =
+ nir_make_options(cso, 1);
+ NIR_PASS_V(shader, nir_lower_blend, options);
+
+ NIR_PASS_V(shader, nir_lower_framebuffer, format, screen->gpu_id);
/* Compile the built shader */
midgard_program program;
- midgard_compile_shader_nir(shader, &program, true);
-
-
- /* Upload the shader */
-
- int size = program.compiled.size;
- uint8_t *dst = program.compiled.data;
-
-#if 0
- midgard_program program = {
- .work_register_count = 3,
- .first_tag = 9,
- //.blend_patch_offset = 16
- .blend_patch_offset = -1,
- };
-
- char dst[4096];
+ midgard_compile_shader_nir(shader, &program, true, screen->gpu_id);
- FILE *fp = fopen("/home/alyssa/panfrost/midgard/blend.bin", "rb");
- fread(dst, 1, 2816, fp);
- fclose(fp);
- int size = 2816;
-#endif
-
- /* Hot patch in constant color */
-
- if (program.blend_patch_offset >= 0) {
- float *hot_color = (float *) (dst + program.blend_patch_offset);
-
- for (int c = 0; c < 4; ++c)
- hot_color[c] = blend_color->color[c];
- }
-
- *out = panfrost_upload(&ctx->shaders, dst, size, true) | program.first_tag;
+ /* At least two work registers are needed due to an encoding quirk */
+ res.work_count = MAX2(program.work_register_count, 2);
- /* We need to switch to shader mode */
- cso->has_blend_shader = true;
+ /* Allow us to patch later */
+ res.patch_index = program.blend_patch_offset;
+ res.first_tag = program.first_tag;
+ res.size = program.compiled.size;
+ res.buffer = program.compiled.data;
- /* At least two work registers are needed due to an encoding quirk */
- cso->blend_work_count = MAX2(program.work_register_count, 2);
+ return res;
}
projects / mesa.git / blobdiff