[Mesa-dev] [PATCH 56/58] st/mesa/glsl: change xfb_program field to last_vert_prog
Timothy Arceri
timothy.arceri at collabora.com
Sun Nov 20 13:29:35 UTC 2016
Now that the i965 backend doesn't depend on this field we can
make it more generic and short circuit a bunch of code paths.
The new field will be used in a following patch for another
clean-up.
---
src/compiler/glsl/link_varyings.cpp | 5 +++-
src/compiler/glsl/linker.cpp | 47 +++++++++++++++---------------
src/mesa/main/mtypes.h | 2 +-
src/mesa/main/shader_query.cpp | 2 +-
src/mesa/main/transformfeedback.c | 5 +++-
src/mesa/state_tracker/st_glsl_to_tgsi.cpp | 5 +++-
src/mesa/state_tracker/st_program.c | 10 +++++--
7 files changed, 44 insertions(+), 32 deletions(-)
diff --git a/src/compiler/glsl/link_varyings.cpp b/src/compiler/glsl/link_varyings.cpp
index e1a29b0..147a7c3 100644
--- a/src/compiler/glsl/link_varyings.cpp
+++ b/src/compiler/glsl/link_varyings.cpp
@@ -1074,6 +1074,9 @@ store_tfeedback_info(struct gl_context *ctx, struct gl_shader_program *prog,
unsigned num_tfeedback_decls,
tfeedback_decl *tfeedback_decls, bool has_xfb_qualifiers)
{
+ if (!prog->last_vert_prog)
+ return true;
+
/* Make sure MaxTransformFeedbackBuffers is less than 32 so the bitmask for
* tracking the number of buffers doesn't overflow.
*/
@@ -1082,7 +1085,7 @@ store_tfeedback_info(struct gl_context *ctx, struct gl_shader_program *prog,
bool separate_attribs_mode =
prog->TransformFeedback.BufferMode == GL_SEPARATE_ATTRIBS;
- struct gl_program *xfb_prog = prog->xfb_program;
+ struct gl_program *xfb_prog = prog->last_vert_prog;
xfb_prog->sh.LinkedTransformFeedback =
rzalloc(xfb_prog, struct gl_transform_feedback_info);
diff --git a/src/compiler/glsl/linker.cpp b/src/compiler/glsl/linker.cpp
index 77017d7..f5d10dd 100644
--- a/src/compiler/glsl/linker.cpp
+++ b/src/compiler/glsl/linker.cpp
@@ -4218,27 +4218,29 @@ build_program_resource_list(struct gl_context *ctx,
output_stage, GL_PROGRAM_OUTPUT))
return;
- struct gl_transform_feedback_info *linked_xfb =
- shProg->xfb_program->sh.LinkedTransformFeedback;
-
- /* Add transform feedback varyings. */
- if (linked_xfb->NumVarying > 0) {
- for (int i = 0; i < linked_xfb->NumVarying; i++) {
- if (!add_program_resource(shProg, resource_set,
- GL_TRANSFORM_FEEDBACK_VARYING,
- &linked_xfb->Varyings[i], 0))
- return;
+ if (shProg->last_vert_prog) {
+ struct gl_transform_feedback_info *linked_xfb =
+ shProg->last_vert_prog->sh.LinkedTransformFeedback;
+
+ /* Add transform feedback varyings. */
+ if (linked_xfb->NumVarying > 0) {
+ for (int i = 0; i < linked_xfb->NumVarying; i++) {
+ if (!add_program_resource(shProg, resource_set,
+ GL_TRANSFORM_FEEDBACK_VARYING,
+ &linked_xfb->Varyings[i], 0))
+ return;
+ }
}
- }
- /* Add transform feedback buffers. */
- for (unsigned i = 0; i < ctx->Const.MaxTransformFeedbackBuffers; i++) {
- if ((linked_xfb->ActiveBuffers >> i) & 1) {
- linked_xfb->Buffers[i].Binding = i;
- if (!add_program_resource(shProg, resource_set,
- GL_TRANSFORM_FEEDBACK_BUFFER,
- &linked_xfb->Buffers[i], 0))
- return;
+ /* Add transform feedback buffers. */
+ for (unsigned i = 0; i < ctx->Const.MaxTransformFeedbackBuffers; i++) {
+ if ((linked_xfb->ActiveBuffers >> i) & 1) {
+ linked_xfb->Buffers[i].Binding = i;
+ if (!add_program_resource(shProg, resource_set,
+ GL_TRANSFORM_FEEDBACK_BUFFER,
+ &linked_xfb->Buffers[i], 0))
+ return;
+ }
}
}
@@ -4564,16 +4566,13 @@ link_varyings_and_uniforms(unsigned first, unsigned last,
varying_names = prog->TransformFeedback.VaryingNames;
}
- /* Find the program used for xfb. Even if we don't use xfb we still want to
- * set this so we can fill the default values for program interface query.
- */
- prog->xfb_program = prog->_LinkedShaders[last]->Program;
+ prog->last_vert_prog = NULL;
int next = last == MESA_SHADER_FRAGMENT ? last - 1 : last;
for (int i = next; i >= 0; i--) {
if (prog->_LinkedShaders[i] == NULL)
continue;
- prog->xfb_program = prog->_LinkedShaders[i]->Program;
+ prog->last_vert_prog = prog->_LinkedShaders[i]->Program;
break;
}
diff --git a/src/mesa/main/mtypes.h b/src/mesa/main/mtypes.h
index 79baf6e..2a03a93 100644
--- a/src/mesa/main/mtypes.h
+++ b/src/mesa/main/mtypes.h
@@ -2718,7 +2718,7 @@ struct gl_shader_program
GLchar **VaryingNames; /**< Array [NumVarying] of char * */
} TransformFeedback;
- struct gl_program *xfb_program;
+ struct gl_program *last_vert_prog;
/** Post-link gl_FragDepth layout for ARB_conservative_depth. */
enum gl_frag_depth_layout FragDepthLayout;
diff --git a/src/mesa/main/shader_query.cpp b/src/mesa/main/shader_query.cpp
index ef0d38a..d941ee9 100644
--- a/src/mesa/main/shader_query.cpp
+++ b/src/mesa/main/shader_query.cpp
@@ -1064,7 +1064,7 @@ get_buffer_property(struct gl_shader_program *shProg,
return 1;
case GL_ACTIVE_VARIABLES:
struct gl_transform_feedback_info *linked_xfb =
- shProg->xfb_program->sh.LinkedTransformFeedback;
+ shProg->last_vert_prog->sh.LinkedTransformFeedback;
for (int i = 0; i < linked_xfb->NumVarying; i++) {
unsigned index = linked_xfb->Varyings[i].BufferIndex;
struct gl_program_resource *buf_res =
diff --git a/src/mesa/main/transformfeedback.c b/src/mesa/main/transformfeedback.c
index 06fa56a..96f3df1 100644
--- a/src/mesa/main/transformfeedback.c
+++ b/src/mesa/main/transformfeedback.c
@@ -65,9 +65,12 @@ bool
_mesa_transform_feedback_is_using_program(struct gl_context *ctx,
struct gl_shader_program *shProg)
{
+ if (!shProg->last_vert_prog)
+ return false;
+
struct using_program_tuple callback_data;
callback_data.found = false;
- callback_data.prog = shProg->xfb_program;
+ callback_data.prog = shProg->last_vert_prog;
_mesa_HashWalk(ctx->TransformFeedback.Objects,
active_xfb_object_references_program, &callback_data);
diff --git a/src/mesa/state_tracker/st_glsl_to_tgsi.cpp b/src/mesa/state_tracker/st_glsl_to_tgsi.cpp
index 79ed715..c5ba53a 100644
--- a/src/mesa/state_tracker/st_glsl_to_tgsi.cpp
+++ b/src/mesa/state_tracker/st_glsl_to_tgsi.cpp
@@ -6892,8 +6892,11 @@ st_translate_stream_output_info(glsl_to_tgsi_visitor *glsl_to_tgsi,
const GLuint outputMapping[],
struct pipe_stream_output_info *so)
{
+ if (!glsl_to_tgsi->shader_program->last_vert_prog)
+ return;
+
struct gl_transform_feedback_info *info =
- glsl_to_tgsi->shader_program->xfb_program->sh.LinkedTransformFeedback;
+ glsl_to_tgsi->shader_program->last_vert_prog->sh.LinkedTransformFeedback;
st_translate_stream_output_info2(info, outputMapping, so);
}
diff --git a/src/mesa/state_tracker/st_program.c b/src/mesa/state_tracker/st_program.c
index e9dd584..1e687ed 100644
--- a/src/mesa/state_tracker/st_program.c
+++ b/src/mesa/state_tracker/st_program.c
@@ -390,9 +390,13 @@ st_translate_vertex_program(struct st_context *st,
stvp->tgsi.type = PIPE_SHADER_IR_NIR;
stvp->tgsi.ir.nir = nir;
- st_translate_stream_output_info2(stvp->shader_program->xfb_program->sh.LinkedTransformFeedback,
- stvp->result_to_output,
- &stvp->tgsi.stream_output);
+ struct gl_program *prog = stvp->shader_program->last_vert_prog;
+ if (prog) {
+ st_translate_stream_output_info2(prog->sh.LinkedTransformFeedback,
+ stvp->result_to_output,
+ &stvp->tgsi.stream_output);
+ }
+
return true;
}
--
2.7.4
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