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, 2 insertions, 2 deletions

diff --git a/src/mesa/main/shaderobj.c b/src/mesa/main/shaderobj.c
index 0d794ad..3076fb4 100644
--- a/src/mesa/main/shaderobj.c
+++ b/src/mesa/main/shaderobj.c
@@ -307,7 +307,7 @@ _mesa_free_shader_program_data(struct gl_context *ctx,
                                struct gl_shader_program *shProg)
 {
    GLuint i;
-   gl_shader_type sh;
+   gl_shader_stage sh;
 
    assert(shProg->Type == GL_SHADER_PROGRAM_MESA);
 
@@ -346,7 +346,7 @@ _mesa_free_shader_program_data(struct gl_context *ctx,
    shProg->TransformFeedback.NumVarying = 0;
 
 
-   for (sh = 0; sh < MESA_SHADER_TYPES; sh++) {
+   for (sh = 0; sh < MESA_SHADER_STAGES; sh++) {
       if (shProg->_LinkedShaders[sh] != NULL) {
 	 ctx->Driver.DeleteShader(ctx, shProg->_LinkedShaders[sh]);
 	 shProg->_LinkedShaders[sh] = NULL;