From: Eric Anholt <e...@anholt.net>
Next step is to validate them at link time.
v2 (Paul Berry <stereotype...@gmail.com>): Don't attempt to export the
layout qualifiers in the event of a compile error, since some of them
are set up by ast_to_hir(), and ast_to_hir() isn't guaranteed to have
run in the event of a compile error.
---
src/glsl/glsl_parser_extras.cpp | 31 +++++++++++++++++++++++++++++++
src/mesa/main/mtypes.h | 18 ++++++++++++++++++
2 files changed, 49 insertions(+)
diff --git a/src/glsl/glsl_parser_extras.cpp b/src/glsl/glsl_parser_extras.cpp
index 6b8fb45..2311447 100644
--- a/src/glsl/glsl_parser_extras.cpp
+++ b/src/glsl/glsl_parser_extras.cpp
@@ -1446,6 +1446,34 @@ ast_struct_specifier::ast_struct_specifier(const char
*identifier,
is_declaration = true;
}
+static void
+set_shader_inout_layout(struct gl_shader *shader,
+ struct _mesa_glsl_parse_state *state)
+{
+ if (shader->Type != GL_GEOMETRY_SHADER) {
+ /* Should have been prevented by the parser. */
+ assert(!state->gs_input_prim_type_specified);
+ assert(!state->out_qualifier->flags.i);
+ return;
+ }
+
+ shader->Geom.VerticesOut = 0;
+ if (state->out_qualifier->flags.q.max_vertices)
+ shader->Geom.VerticesOut = state->out_qualifier->max_vertices;
+
+ if (state->gs_input_prim_type_specified) {
+ shader->Geom.InputType = state->gs_input_prim_type;
+ } else {
+ shader->Geom.InputType = ~0;
+ }
+
+ if (state->out_qualifier->flags.q.prim_type) {
+ shader->Geom.OutputType = state->out_qualifier->prim_type;
+ } else {
+ shader->Geom.OutputType = ~0;
+ }
+}
+
extern "C" {
void
@@ -1521,6 +1549,9 @@ _mesa_glsl_compile_shader(struct gl_context *ctx, struct
gl_shader *shader,
shader->UniformBlocks = state->uniform_blocks;
ralloc_steal(shader, shader->UniformBlocks);
+ if (!state->error)
+ set_shader_inout_layout(shader, state);
+
/* Retain any live IR, but trash the rest. */
reparent_ir(shader->ir, shader->ir);
diff --git a/src/mesa/main/mtypes.h b/src/mesa/main/mtypes.h
index 33075bd..bc90d09 100644
--- a/src/mesa/main/mtypes.h
+++ b/src/mesa/main/mtypes.h
@@ -2170,6 +2170,24 @@ struct gl_shader
/** Shaders containing built-in functions that are used for linking. */
struct gl_shader *builtins_to_link[16];
unsigned num_builtins_to_link;
+
+ /**
+ * Geometry shader state from GLSL 1.50 layout qualifiers.
+ */
+ struct {
+ GLint VerticesOut;
+ /**
+ * GL_POINTS, GL_LINES, GL_LINES_ADJACENCY_ARB, GL_TRIANGLES, or
+ * GL_TRIANGLES_ADJACENCY_ARB, or ~0 if it's not set in this shader
+ * (since GL_POINTS is 0).
+ */
+ GLenum InputType;
+ /**
+ * GL_POINTS, GL_LINE_STRIP or GL_TRIANGLE_STRIP, or ~0 if it's not set
+ * in this shader (since GL_POINTS is 0).
+ */
+ GLenum OutputType;
+ } Geom;
};
--
1.8.3.4
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