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authormarha <marha@users.sourceforge.net>2011-10-27 08:37:52 +0200
committermarha <marha@users.sourceforge.net>2011-10-27 08:37:52 +0200
commit2a9be4af293f20fa33cc34fbc3b72e2235d91090 (patch)
treed41608bda1d56be1aa96857dee20e988b53760a3 /mesalib/src/glsl/linker.cpp
parent9d53da0fbb9ae6df9a38ad40df4f53cd28287235 (diff)
parentd662d461634660f5c0f3998b5eb7d7ed3bd5a25f (diff)
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Merge remote-tracking branch 'origin/released'
Diffstat (limited to 'mesalib/src/glsl/linker.cpp')
-rw-r--r--mesalib/src/glsl/linker.cpp28
1 files changed, 23 insertions, 5 deletions
diff --git a/mesalib/src/glsl/linker.cpp b/mesalib/src/glsl/linker.cpp
index a7c38a342..beadec6f6 100644
--- a/mesalib/src/glsl/linker.cpp
+++ b/mesalib/src/glsl/linker.cpp
@@ -1742,14 +1742,10 @@ link_shaders(struct gl_context *ctx, struct gl_shader_program *prog)
if (ctx->ShaderCompilerOptions[i].LowerClipDistance)
lower_clip_distance(prog->_LinkedShaders[i]->ir);
- while (do_common_optimization(prog->_LinkedShaders[i]->ir, true, 32))
+ while (do_common_optimization(prog->_LinkedShaders[i]->ir, true, false, 32))
;
}
- update_array_sizes(prog);
-
- assign_uniform_locations(prog);
-
/* FINISHME: The value of the max_attribute_index parameter is
* FINISHME: implementation dependent based on the value of
* FINISHME: GL_MAX_VERTEX_ATTRIBS. GL_MAX_VERTEX_ATTRIBS must be
@@ -1785,6 +1781,12 @@ link_shaders(struct gl_context *ctx, struct gl_shader_program *prog)
if (prog->_LinkedShaders[MESA_SHADER_VERTEX] != NULL) {
demote_shader_inputs_and_outputs(prog->_LinkedShaders[MESA_SHADER_VERTEX],
ir_var_out);
+
+ /* Eliminate code that is now dead due to unused vertex outputs being
+ * demoted.
+ */
+ while (do_dead_code(prog->_LinkedShaders[MESA_SHADER_VERTEX]->ir, false))
+ ;
}
if (prog->_LinkedShaders[MESA_SHADER_GEOMETRY] != NULL) {
@@ -1793,14 +1795,30 @@ link_shaders(struct gl_context *ctx, struct gl_shader_program *prog)
demote_shader_inputs_and_outputs(sh, ir_var_in);
demote_shader_inputs_and_outputs(sh, ir_var_inout);
demote_shader_inputs_and_outputs(sh, ir_var_out);
+
+ /* Eliminate code that is now dead due to unused geometry outputs being
+ * demoted.
+ */
+ while (do_dead_code(prog->_LinkedShaders[MESA_SHADER_GEOMETRY]->ir, false))
+ ;
}
if (prog->_LinkedShaders[MESA_SHADER_FRAGMENT] != NULL) {
gl_shader *const sh = prog->_LinkedShaders[MESA_SHADER_FRAGMENT];
demote_shader_inputs_and_outputs(sh, ir_var_in);
+
+ /* Eliminate code that is now dead due to unused fragment inputs being
+ * demoted. This shouldn't actually do anything other than remove
+ * declarations of the (now unused) global variables.
+ */
+ while (do_dead_code(prog->_LinkedShaders[MESA_SHADER_FRAGMENT]->ir, false))
+ ;
}
+ update_array_sizes(prog);
+ assign_uniform_locations(prog);
+
/* OpenGL ES requires that a vertex shader and a fragment shader both be
* present in a linked program. By checking for use of shading language
* version 1.00, we also catch the GL_ARB_ES2_compatibility case.