mesa: Clean up nomenclature for pipeline stages.

Previously, we had an enum called gl_shader_type which represented
pipeline stages in the order they occur in the pipeline
(i.e. MESA_SHADER_VERTEX=0, MESA_SHADER_GEOMETRY=1, etc), and several
inconsistently named functions for converting between it and other
representations:

- _mesa_shader_type_to_string: gl_shader_type -> string
- _mesa_shader_type_to_index: GLenum (GL_*_SHADER) -> gl_shader_type
- _mesa_program_target_to_index: GLenum (GL_*_PROGRAM) -> gl_shader_type
- _mesa_shader_enum_to_string: GLenum (GL_*_{SHADER,PROGRAM}) -> string

This patch tries to clean things up so that we use more consistent
terminology: the enum is now called gl_shader_stage (to emphasize that
it is in the order of pipeline stages), and the conversion functions are:

- _mesa_shader_stage_to_string: gl_shader_stage -> string
- _mesa_shader_enum_to_shader_stage: GLenum (GL_*_SHADER) -> gl_shader_stage
- _mesa_program_enum_to_shader_stage: GLenum (GL_*_PROGRAM) -> gl_shader_stage
- _mesa_progshader_enum_to_string: GLenum (GL_*_{SHADER,PROGRAM}) -> string

In addition, MESA_SHADER_TYPES has been renamed to MESA_SHADER_STAGES,
for consistency with the new name for the enum.

Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>

v2: Also rename the "target" field of _mesa_glsl_parse_state and the
"target" parameter of _mesa_shader_stage_to_string to "stage".

Reviewed-by: Brian Paul <brianp@vmware.com>

1 files changed, 4 insertions, 4 deletions

diff --git a/src/mesa/program/program.h b/src/mesa/program/program.h
index baff473..4015b4c 100644
--- a/src/mesa/program/program.h
+++ b/src/mesa/program/program.h
@@ -181,7 +181,7 @@ _mesa_find_free_register(const GLboolean used[],
 
 extern GLboolean
 _mesa_valid_register_index(const struct gl_context *ctx,
-                           gl_shader_type shaderType,
+                           gl_shader_stage shaderType,
                            gl_register_file file, GLint index);
 
 extern void
@@ -192,7 +192,7 @@ _mesa_get_min_invocations_per_fragment(struct gl_context *ctx,
                                        const struct gl_fragment_program *prog);
 
 static inline GLuint
-_mesa_program_target_to_index(GLenum v)
+_mesa_program_enum_to_shader_stage(GLenum v)
 {
    switch (v) {
    case GL_VERTEX_PROGRAM_ARB:
@@ -215,8 +215,8 @@ _mesa_program_index_to_target(GLuint i)
       GL_GEOMETRY_PROGRAM_NV,
       GL_FRAGMENT_PROGRAM_ARB
    };
-   STATIC_ASSERT(Elements(enums) == MESA_SHADER_TYPES);
-   if(i >= MESA_SHADER_TYPES) {
+   STATIC_ASSERT(Elements(enums) == MESA_SHADER_STAGES);
+   if(i >= MESA_SHADER_STAGES) {
       assert(!"Unexpected program index");
       return 0;
    } else