---
src/mesa/state_tracker/st_glsl_to_tgsi.cpp | 410 ++++++++++++++++++++++++++++-
src/mesa/state_tracker/st_glsl_to_tgsi.h | 5 +
src/mesa/state_tracker/st_program.c | 118 +++++++--
src/mesa/state_tracker/st_program.h | 6 +
4 files changed, 520 insertions(+), 19 deletions(-)
diff --git a/src/mesa/state_tracker/st_glsl_to_tgsi.cpp
b/src/mesa/state_tracker/st_glsl_to_tgsi.cpp
index f481e89..fbc598e 100644
--- a/src/mesa/state_tracker/st_glsl_to_tgsi.cpp
+++ b/src/mesa/state_tracker/st_glsl_to_tgsi.cpp
@@ -35,6 +35,9 @@
#include "glsl_parser_extras.h"
#include "ir_optimization.h"
+#include "nir.h"
+#include "glsl_to_nir.h"
+
#include "main/errors.h"
#include "main/shaderobj.h"
#include "main/uniforms.h"
@@ -5486,9 +5489,9 @@ out:
* generating Mesa IR.
*/
static struct gl_program *
-get_mesa_program(struct gl_context *ctx,
- struct gl_shader_program *shader_program,
- struct gl_shader *shader)
+get_mesa_program_tgsi(struct gl_context *ctx,
+ struct gl_shader_program *shader_program,
+ struct gl_shader *shader)
{
glsl_to_tgsi_visitor* v;
struct gl_program *prog;
@@ -5680,6 +5683,396 @@ get_mesa_program(struct gl_context *ctx,
return prog;
}
+/* TODO dup'd from brw_vec4_vistor.cpp.. what should we do? */
+static int
+type_size_vec4(const struct glsl_type *type)
+{
+ unsigned int i;
+ int size;
+
+ switch (type->base_type) {
+ case GLSL_TYPE_UINT:
+ case GLSL_TYPE_INT:
+ case GLSL_TYPE_FLOAT:
+ case GLSL_TYPE_BOOL:
+ if (type->is_matrix()) {
+ return type->matrix_columns;
+ } else {
+ /* Regardless of size of vector, it gets a vec4. This is bad
+ * packing for things like floats, but otherwise arrays become a
+ * mess. Hopefully a later pass over the code can pack scalars
+ * down if appropriate.
+ */
+ return 1;
+ }
+ case GLSL_TYPE_ARRAY:
+ assert(type->length > 0);
+ return type_size_vec4(type->fields.array) * type->length;
+ case GLSL_TYPE_STRUCT:
+ size = 0;
+ for (i = 0; i < type->length; i++) {
+ size += type_size_vec4(type->fields.structure[i].type);
+ }
+ return size;
+ case GLSL_TYPE_SUBROUTINE:
+ return 1;
+
+ case GLSL_TYPE_SAMPLER:
+ /* Samplers take up no register space, since they're baked in at
+ * link time.
+ */
+ return 0;
+ case GLSL_TYPE_ATOMIC_UINT:
+ return 0;
+ case GLSL_TYPE_IMAGE:
+// return DIV_ROUND_UP(BRW_IMAGE_PARAM_SIZE, 4);
+ case GLSL_TYPE_VOID:
+ case GLSL_TYPE_DOUBLE:
+ case GLSL_TYPE_ERROR:
+ case GLSL_TYPE_INTERFACE:
+ unreachable("not reached");
+ }
+
+ return 0;
+}
+
+/* Depending on PIPE_CAP_TGSI_TEXCOORD (st->needs_texcoord_semantic) we
+ * may need to fix up varying slots so the glsl->nir path is aligned
+ * with the anything->tgsi->nir path.
+ */
+static void
+st_nir_fixup_varying_slots(struct st_context *st, struct exec_list *var_list)
+{
+ if (st->needs_texcoord_semantic)
+ return;
+
+ nir_foreach_variable(var, var_list) {
+ if (var->data.location >= VARYING_SLOT_VAR0) {
+ var->data.location += 9;
+ } else if ((var->data.location >= VARYING_SLOT_TEX0) &&
+ (var->data.location <= VARYING_SLOT_TEX7)) {
+ var->data.location += VARYING_SLOT_VAR0 - VARYING_SLOT_TEX0;
+ }
+ }
+}
+
+/* input location assignment for VS inputs must be handled specially, so
+ * that it is aligned w/ st's vbo state.
+ * (This isn't the case with, for ex, FS inputs, which only need to agree
+ * on varying-slot w/ the VS outputs)
+ */
+static void
+st_nir_assign_vs_in_locations(struct gl_program *prog,
+ struct exec_list *var_list, unsigned *size)
+{
+ unsigned attr, num_inputs = 0;
+ unsigned input_to_index[VERT_ATTRIB_MAX] = {0};
+
+ /* TODO de-duplicate w/ similar code in st_translate_vertex_program()? */
+ for (attr = 0; attr < VERT_ATTRIB_MAX; attr++) {
+ if ((prog->InputsRead & BITFIELD64_BIT(attr)) != 0) {
+ input_to_index[attr] = num_inputs;
+ num_inputs++;
+ if ((prog->DoubleInputsRead & BITFIELD64_BIT(attr)) != 0) {
+ /* add placeholder for second part of a double attribute */
+ num_inputs++;
+ }
+ }
+ }
+
+ *size = 0;
+ nir_foreach_variable(var, var_list) {
+ attr = var->data.location;
+ assert(attr < ARRAY_SIZE(input_to_index));
+ var->data.driver_location = input_to_index[attr];
+ (*size)++;
+ }
+}
+
+static void
+st_nir_assign_uniform_locations(struct gl_program *prog,
+ struct exec_list *uniform_list, unsigned *size)
+{
+ int max = 0;
+ int shaderidx = 0;
+
+ nir_foreach_variable(uniform, uniform_list) {
+ int loc;
+
+ if (uniform->type->is_sampler()) {
+ loc = shaderidx++;
+ uniform->data.location = loc; /* this should match resulting sampler
idx */
+ } else if (strncmp(uniform->name, "gl_", 3) == 0) {
+ const gl_state_index *const stateTokens = (gl_state_index
*)uniform->state_slots[0].tokens;
+ /* This state reference has already been setup by ir_to_mesa, but
we'll
+ * get the same index back here.
+ */
+ loc = _mesa_add_state_reference(prog->Parameters, stateTokens);
+ } else {
+ loc = _mesa_lookup_parameter_index(prog->Parameters, -1,
uniform->name);
+ }
+
+ /* is there a better way to do this? If we have something like:
+ *
+ * struct S {
+ * float f;
+ * vec4 v;
+ * };
+ * uniform S color;
+ *
+ * Then what we get in prog->Parameters looks like:
+ *
+ * 0: Name=color.f, Type=6, DataType=1406, Size=1
+ * 1: Name=color.v, Type=6, DataType=8b52, Size=4
+ *
+ * So the name doesn't match up and _mesa_lookup_parameter_index()
+ * fails. In this case just find the first matching "color.*"..
+ */
+ if (loc < 0) {
+ int namelen = strlen(uniform->name);
+ for (unsigned i = 0; i < prog->Parameters->NumParameters; i++) {
+ struct gl_program_parameter *p = &prog->Parameters->Parameters[i];
+ if ((strncmp(p->Name, uniform->name, namelen) == 0) &&
+ (p->Name[namelen] == '.')) {
+ loc = i;
+ break;
+ }
+ }
+ }
+
+ uniform->data.driver_location = loc;
+ if (!uniform->type->is_sampler())
+ max = MAX2(max, loc + type_size_vec4(uniform->type));
+ }
+ *size = max;
+}
+
+static struct gl_program *
+get_mesa_program_nir(struct gl_context *ctx,
+ struct gl_shader_program *shader_program,
+ struct gl_shader *shader)
+{
+ struct gl_program *prog;
+ GLenum target = _mesa_shader_stage_to_program(shader->Stage);
+
+ validate_ir_tree(shader->ir);
+
+ prog = ctx->Driver.NewProgram(ctx, target, shader_program->Name);
+ if (!prog)
+ return NULL;
+
+ prog->Parameters = _mesa_new_parameter_list();
+
+ _mesa_copy_linked_program_data(shader->Stage, shader_program, prog);
+ _mesa_generate_parameters_list_for_uniforms(shader_program, shader,
+ prog->Parameters);
+
+// /* Remove reads from output registers. */
+// lower_output_reads(shader->Stage, shader->ir);
+
+ /* Make a pass over the IR to add state references for any built-in
+ * uniforms that are used. This has to be done now (during linking).
+ * Code generation doesn't happen until the first time this shader is
+ * used for rendering. Waiting until then to generate the parameters is
+ * too late. At that point, the values for the built-in uniforms won't
+ * get sent to the shader.
+ */
+ foreach_in_list(ir_instruction, node, shader->ir) {
+ ir_variable *var = node->as_variable();
+
+ if ((var == NULL) || (var->data.mode != ir_var_uniform) ||
+ (strncmp(var->name, "gl_", 3) != 0))
+ continue;
+
+ const ir_state_slot *const slots = var->get_state_slots();
+ assert(slots != NULL);
+
+ for (unsigned int i = 0; i < var->get_num_state_slots(); i++) {
+ _mesa_add_state_reference(prog->Parameters,
+ (gl_state_index *) slots[i].tokens);
+ }
+ }
+
+ if (ctx->_Shader->Flags & GLSL_DUMP) {
+ _mesa_log("\n");
+ _mesa_log("GLSL IR for linked %s program %d:\n",
+ _mesa_shader_stage_to_string(shader->Stage),
+ shader_program->Name);
+ _mesa_print_ir(_mesa_get_log_file(), shader->ir, NULL);
+ _mesa_log("\n\n");
+ }
+
+ prog->Instructions = NULL;
+ prog->NumInstructions = 0;
+
+ do_set_program_inouts(shader->ir, prog, shader->Stage);
+
+ prog->SamplersUsed = shader->active_samplers;
+ prog->ShadowSamplers = shader->shadow_samplers;
+ _mesa_update_shader_textures_used(shader_program, prog);
+
+ _mesa_reference_program(ctx, &shader->Program, prog);
+
+
+ /* This has to be done last. Any operation the can cause
+ * prog->ParameterValues to get reallocated (e.g., anything that adds a
+ * program constant) has to happen before creating this linkage.
+ */
+ _mesa_associate_uniform_storage(ctx, shader_program, prog->Parameters);
+
+ struct st_vertex_program *stvp;
+ struct st_fragment_program *stfp;
+
+ switch (shader->Type) {
+ case GL_VERTEX_SHADER:
+ stvp = (struct st_vertex_program *)prog;
+ stvp->shader_program = shader_program;
+ break;
+ case GL_FRAGMENT_SHADER:
+ stfp = (struct st_fragment_program *)prog;
+ stfp->shader_program = shader_program;
+ break;
+ default:
+ assert(!"should not be reached");
+ return NULL;
+ }
+
+ return prog;
+}
+
+
+/* TODO probably get this from pipe_screen?
+ * NOTE we need this to not be on the stack, so it doesn't go away when
+ * get_mesa_program_nir() returns.. or just allow pipe driver to supply..
+ */
+static nir_shader_compiler_options nir_options;
+
+// XXX move this!
+extern "C" {
+nir_shader *
+st_glsl_to_nir(struct st_context *st, struct gl_program *prog,
+ struct gl_shader_program *shader_program,
+ gl_shader_stage stage)
+{
+ nir_shader *nir;
+
+ if (prog->nir)
+ return prog->nir;
+
+ // XXX get from pipe_screen? Or just let pipe driver provide?
+ nir_options.lower_fpow = true;
+ nir_options.lower_fsat = true;
+ nir_options.lower_scmp = true;
+ nir_options.lower_flrp = true;
+ nir_options.lower_ffract = true;
+ nir_options.native_integers = true;
+
+ nir = glsl_to_nir(shader_program, stage, &nir_options);
+ prog->nir = nir;
+
+ nir_validate_shader(nir);
+
+ nir_print_shader(nir, _mesa_get_log_file());
+
+ nir_lower_global_vars_to_local(nir);
+ nir_validate_shader(nir);
+
+ nir_split_var_copies(nir);
+ nir_lower_var_copies(nir);
+ nir_validate_shader(nir);
+
+ /* fragment shaders may need : */
+ if (stage == MESA_SHADER_FRAGMENT) {
+ static const gl_state_index wposTransformState[STATE_LENGTH] = {
+ STATE_INTERNAL, STATE_FB_WPOS_Y_TRANSFORM
+ };
+ nir_lower_wpos_ytransform_options wpos_options = {0};
+ struct pipe_screen *pscreen = st->pipe->screen;
+
+ memcpy(wpos_options.state_tokens, wposTransformState,
+ sizeof(wpos_options.state_tokens));
+ wpos_options.fs_coord_origin_upper_left =
+ pscreen->get_param(pscreen, PIPE_CAP_TGSI_FS_COORD_ORIGIN_UPPER_LEFT);
+ wpos_options.fs_coord_origin_lower_left =
+ pscreen->get_param(pscreen, PIPE_CAP_TGSI_FS_COORD_ORIGIN_LOWER_LEFT);
+ wpos_options.fs_coord_pixel_center_integer =
+ pscreen->get_param(pscreen,
PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_INTEGER);
+ wpos_options.fs_coord_pixel_center_half_integer =
+ pscreen->get_param(pscreen,
PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_HALF_INTEGER);
+
+ if (nir_lower_wpos_ytransform(nir, &wpos_options)) {
+ _mesa_add_state_reference(prog->Parameters, wposTransformState);
+ }
+ }
+
+ if (stage == MESA_SHADER_VERTEX) {
+ /* Needs special handling so drvloc matches the vbo state: */
+ st_nir_assign_vs_in_locations(prog, &nir->inputs, &nir->num_inputs);
+ nir_assign_var_locations(&nir->outputs,
+ &nir->num_outputs,
+ type_size_vec4);
+ st_nir_fixup_varying_slots(st, &nir->outputs);
+ } else if (stage == MESA_SHADER_FRAGMENT) {
+ nir_assign_var_locations(&nir->inputs,
+ &nir->num_inputs,
+ type_size_vec4);
+ st_nir_fixup_varying_slots(st, &nir->inputs);
+ nir_assign_var_locations(&nir->outputs,
+ &nir->num_outputs,
+ type_size_vec4);
+ } else {
+ unreachable("invalid shader type for tgsi bypass\n");
+ }
+
+ st_nir_assign_uniform_locations(prog, &nir->uniforms, &nir->num_uniforms);
+
+ nir_lower_system_values(nir);
+ nir_lower_io(nir, nir_var_all, type_size_vec4);
+ nir_lower_samplers(nir, NULL);
+ nir_validate_shader(nir);
+
+ // XXX do we need anything else from brw_create_nir().. and what
+ // is best way to split up which things should be here vs driver?
+ // currently just trying to make the result here similar to what
+ // we get from tgsi_to_nir().. so lower_io, etc..
+
+ // XXX new flag, probably?
+ if (st->ctx->_Shader->Flags & GLSL_DUMP) {
+ _mesa_log("\n");
+ _mesa_log("NIR IR for linked %s program %d:\n",
+ _mesa_shader_stage_to_string(stage),
+ shader_program->Name);
+ nir_print_shader(nir, _mesa_get_log_file());
+ _mesa_log("\n\n");
+ }
+
+ return nir;
+}
+}
+
+static struct gl_program *
+get_mesa_program(struct gl_context *ctx,
+ struct gl_shader_program *shader_program,
+ struct gl_shader *shader)
+{
+ struct pipe_screen *pscreen = ctx->st->pipe->screen;
+ unsigned ptarget = st_shader_stage_to_ptarget(shader->Stage);
+ enum pipe_shader_ir preferred_ir = (enum pipe_shader_ir)
+ pscreen->get_shader_param(pscreen, ptarget,
PIPE_SHADER_CAP_PREFERRED_IR);
+ if (preferred_ir == PIPE_SHADER_IR_NIR) {
+ /* TODO only for GLSL VS/FS for now: */
+ switch (shader->Type) {
+ case GL_VERTEX_SHADER:
+ case GL_FRAGMENT_SHADER:
+ return get_mesa_program_nir(ctx, shader_program, shader);
+ default:
+ break;
+ }
+ }
+ return get_mesa_program_tgsi(ctx, shader_program, shader);
+}
+
+
extern "C" {
static void
@@ -5880,9 +6273,18 @@ st_translate_stream_output_info(glsl_to_tgsi_visitor
*glsl_to_tgsi,
const GLuint outputMapping[],
struct pipe_stream_output_info *so)
{
- unsigned i;
struct gl_transform_feedback_info *info =
&glsl_to_tgsi->shader_program->LinkedTransformFeedback;
+ st_translate_stream_output_info2(info, outputMapping, so);
+}
+
+/* TODO better name, and split out into own patch.. */
+void
+st_translate_stream_output_info2(struct gl_transform_feedback_info *info,
+ const GLuint outputMapping[],
+ struct pipe_stream_output_info *so)
+{
+ unsigned i;
for (i = 0; i < info->NumOutputs; i++) {
so->output[i].register_index =
diff --git a/src/mesa/state_tracker/st_glsl_to_tgsi.h
b/src/mesa/state_tracker/st_glsl_to_tgsi.h
index 729295b..1986025 100644
--- a/src/mesa/state_tracker/st_glsl_to_tgsi.h
+++ b/src/mesa/state_tracker/st_glsl_to_tgsi.h
@@ -63,6 +63,11 @@ st_translate_stream_output_info(struct glsl_to_tgsi_visitor
*glsl_to_tgsi,
const GLuint outputMapping[],
struct pipe_stream_output_info *so);
+void
+st_translate_stream_output_info2(struct gl_transform_feedback_info *info,
+ const GLuint outputMapping[],
+ struct pipe_stream_output_info *so);
+
extern const unsigned _mesa_sysval_to_semantic[SYSTEM_VALUE_MAX];
#ifdef __cplusplus
diff --git a/src/mesa/state_tracker/st_program.c
b/src/mesa/state_tracker/st_program.c
index 75ccaf2..d2e4627 100644
--- a/src/mesa/state_tracker/st_program.c
+++ b/src/mesa/state_tracker/st_program.c
@@ -38,6 +38,9 @@
#include "program/prog_print.h"
#include "program/programopt.h"
+#include "nir.h"
+#include "nir/nir_emulate.h"
+
#include "pipe/p_context.h"
#include "pipe/p_defines.h"
#include "pipe/p_shader_tokens.h"
@@ -70,8 +73,14 @@ delete_vp_variant(struct st_context *st, struct
st_vp_variant *vpv)
if (vpv->draw_shader)
draw_delete_vertex_shader( st->draw, vpv->draw_shader );
- if (vpv->tgsi.tokens)
- ureg_free_tokens(vpv->tgsi.tokens);
+ if (vpv->tgsi.ir == PIPE_SHADER_IR_NIR) {
+/* TODO until nir_clone():
+ ralloc_free(vpv->tgsi.nir);
+ */
+ } else {
+ if (vpv->tgsi.tokens)
+ ureg_free_tokens(vpv->tgsi.tokens);
+ }
free( vpv );
}
@@ -95,7 +104,12 @@ st_release_vp_variants( struct st_context *st,
stvp->variants = NULL;
- if (stvp->tgsi.tokens) {
+ if (stvp->tgsi.ir == PIPE_SHADER_IR_NIR) {
+/*
+ ralloc_free(stvp->tgsi.nir);
+ stvp->tgsi.nir = NULL;
+ */
+ } else if (stvp->tgsi.tokens) {
tgsi_free_tokens(stvp->tgsi.tokens);
stvp->tgsi.tokens = NULL;
}
@@ -134,7 +148,12 @@ st_release_fp_variants(struct st_context *st, struct
st_fragment_program *stfp)
stfp->variants = NULL;
- if (stfp->tgsi.tokens) {
+ if (stfp->tgsi.ir == PIPE_SHADER_IR_NIR) {
+/*
+ ralloc_free(stfp->tgsi.nir);
+ stfp->tgsi.nir = NULL;
+ */
+ } else if (stfp->tgsi.tokens) {
ureg_free_tokens(stfp->tgsi.tokens);
stfp->tgsi.tokens = NULL;
}
@@ -251,6 +270,11 @@ st_release_tep_variants(struct st_context *st, struct
st_tesseval_program *sttep
}
}
+// XXX
+nir_shader *
+st_glsl_to_nir(struct st_context *st, struct gl_program *prog,
+ struct gl_shader_program *shader_program,
+ gl_shader_stage stage);
/**
* Translate a vertex program.
@@ -388,9 +412,23 @@ st_translate_vertex_program(struct st_context *st,
output_semantic_name[num_outputs] = TGSI_SEMANTIC_EDGEFLAG;
output_semantic_index[num_outputs] = 0;
- if (!stvp->glsl_to_tgsi)
+ if (!stvp->glsl_to_tgsi && !stvp->shader_program)
_mesa_remove_output_reads(&stvp->Base.Base, PROGRAM_OUTPUT);
+ if (stvp->shader_program) {
+ nir_shader *nir = st_glsl_to_nir(st, &stvp->Base.Base,
+ stvp->shader_program,
+ MESA_SHADER_VERTEX);
+
+ stvp->tgsi.ir = PIPE_SHADER_IR_NIR;
+ stvp->tgsi.nir = nir;
+
+
st_translate_stream_output_info2(&stvp->shader_program->LinkedTransformFeedback,
+ stvp->result_to_output,
+ &stvp->tgsi.stream_output);
+ return true;
+ }
+
ureg = ureg_create_with_screen(TGSI_PROCESSOR_VERTEX, st->pipe->screen);
if (ureg == NULL)
return false;
@@ -461,6 +499,15 @@ st_translate_vertex_program(struct st_context *st,
return stvp->tgsi.tokens != NULL;
}
+static unsigned
+st_vp_variant_flags(const struct st_vp_variant_key *key)
+{
+ unsigned flags =
+ (key->clamp_color ? TGSI_EMU_CLAMP_COLOR_OUTPUTS : 0) |
+ (key->passthrough_edgeflags ? TGSI_EMU_PASSTHROUGH_EDGEFLAG : 0);
+ return flags;
+}
+
static struct st_vp_variant *
st_create_vp_variant(struct st_context *st,
struct st_vertex_program *stvp,
@@ -468,18 +515,28 @@ st_create_vp_variant(struct st_context *st,
{
struct st_vp_variant *vpv = CALLOC_STRUCT(st_vp_variant);
struct pipe_context *pipe = st->pipe;
+ unsigned flags = st_vp_variant_flags(key);
vpv->key = *key;
- vpv->tgsi.tokens = tgsi_dup_tokens(stvp->tgsi.tokens);
vpv->tgsi.stream_output = stvp->tgsi.stream_output;
vpv->num_inputs = stvp->num_inputs;
+ if (stvp->tgsi.ir == PIPE_SHADER_IR_NIR) {
+ vpv->tgsi.ir = PIPE_SHADER_IR_NIR;
+ vpv->tgsi.nir = nir_shader_ref(stvp->tgsi.nir);
+ if (flags) {
+ vpv->tgsi.nir = nir_shader_mutable(vpv->tgsi.nir);
+ nir_emulate(vpv->tgsi.nir, flags);
+ }
+ vpv->driver_shader = pipe->create_vs_state(pipe, &vpv->tgsi);
+ return vpv;
+ }
+
+ vpv->tgsi.tokens = tgsi_dup_tokens(stvp->tgsi.tokens);
+
/* Emulate features. */
- if (key->clamp_color || key->passthrough_edgeflags) {
+ if (flags) {
const struct tgsi_token *tokens;
- unsigned flags =
- (key->clamp_color ? TGSI_EMU_CLAMP_COLOR_OUTPUTS : 0) |
- (key->passthrough_edgeflags ? TGSI_EMU_PASSTHROUGH_EDGEFLAG : 0);
tokens = tgsi_emulate(vpv->tgsi.tokens, flags);
@@ -583,7 +640,7 @@ st_translate_fragment_program(struct st_context *st,
memset(inputSlotToAttr, ~0, sizeof(inputSlotToAttr));
- if (!stfp->glsl_to_tgsi)
+ if (!stfp->glsl_to_tgsi && !stfp->shader_program)
_mesa_remove_output_reads(&stfp->Base.Base, PROGRAM_OUTPUT);
/*
@@ -787,6 +844,17 @@ st_translate_fragment_program(struct st_context *st,
}
}
+ if (stfp->shader_program) {
+ nir_shader *nir = st_glsl_to_nir(st, &stfp->Base.Base,
+ stfp->shader_program,
+ MESA_SHADER_FRAGMENT);
+
+ stfp->tgsi.ir = PIPE_SHADER_IR_NIR;
+ stfp->tgsi.nir = nir;
+
+ return true;
+ }
+
ureg = ureg_create_with_screen(TGSI_PROCESSOR_FRAGMENT, st->pipe->screen);
if (ureg == NULL)
return false;
@@ -867,6 +935,15 @@ st_translate_fragment_program(struct st_context *st,
return stfp->tgsi.tokens != NULL;
}
+static unsigned
+st_fp_variant_flags(const struct st_fp_variant_key *key)
+{
+ unsigned flags =
+ (key->clamp_color ? TGSI_EMU_CLAMP_COLOR_OUTPUTS : 0) |
+ (key->persample_shading ? TGSI_EMU_FORCE_PERSAMPLE_INTERP : 0);
+ return flags;
+}
+
static struct st_fp_variant *
st_create_fp_variant(struct st_context *st,
struct st_fragment_program *stfp,
@@ -875,20 +952,31 @@ st_create_fp_variant(struct st_context *st,
struct pipe_context *pipe = st->pipe;
struct st_fp_variant *variant = CALLOC_STRUCT(st_fp_variant);
struct pipe_shader_state tgsi = {0};
+ unsigned flags = st_fp_variant_flags(key);
if (!variant)
return NULL;
+ if (stfp->tgsi.ir == PIPE_SHADER_IR_NIR) {
+ tgsi.ir = PIPE_SHADER_IR_NIR;
+ tgsi.nir = nir_shader_ref(stfp->tgsi.nir);
+ if (flags) {
+ tgsi.nir = nir_shader_mutable(tgsi.nir);
+ nir_emulate(tgsi.nir, flags);
+ }
+ variant->driver_shader = pipe->create_fs_state(pipe, &tgsi);
+ variant->key = *key;
+
+ return variant;
+ }
+
tgsi.tokens = stfp->tgsi.tokens;
assert(!(key->bitmap && key->drawpixels));
/* Emulate features. */
- if (key->clamp_color || key->persample_shading) {
+ if (flags) {
const struct tgsi_token *tokens;
- unsigned flags =
- (key->clamp_color ? TGSI_EMU_CLAMP_COLOR_OUTPUTS : 0) |
- (key->persample_shading ? TGSI_EMU_FORCE_PERSAMPLE_INTERP : 0);
tokens = tgsi_emulate(tgsi.tokens, flags);
diff --git a/src/mesa/state_tracker/st_program.h
b/src/mesa/state_tracker/st_program.h
index d9b53ac..9d82b39 100644
--- a/src/mesa/state_tracker/st_program.h
+++ b/src/mesa/state_tracker/st_program.h
@@ -101,6 +101,9 @@ struct st_fragment_program
struct pipe_shader_state tgsi;
struct glsl_to_tgsi_visitor* glsl_to_tgsi;
+ /* used when bypassing glsl_to_tgsi: */
+ struct gl_shader_program *shader_program;
+
struct st_fp_variant *variants;
};
@@ -157,6 +160,9 @@ struct st_vertex_program
struct pipe_shader_state tgsi;
struct glsl_to_tgsi_visitor* glsl_to_tgsi;
+ /* used when bypassing glsl_to_tgsi: */
+ struct gl_shader_program *shader_program;
+
/** maps a Mesa VERT_ATTRIB_x to a packed TGSI input index */
/** maps a TGSI input index back to a Mesa VERT_ATTRIB_x */
GLuint index_to_input[PIPE_MAX_SHADER_INPUTS];
--
2.5.0
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