glsl/mesa: split gl_shader in two

There are two distinctly different uses of this struct. The first
is to store GL shader objects. The second is to store information
about a shader stage thats been linked.

The two uses actually share few fields and there is clearly confusion
about their use. For example the linked shaders map one to one with
a program so can simply be destroyed along with the program. However
previously we were calling reference counting on the linked shaders.

We were also creating linked shaders with a name even though it
is always 0 and called the driver version of the _mesa_new_shader()
function unnecessarily for GL shader objects.

Acked-by: Iago Toral Quiroga <itoral@igalia.com>

11 files changed, 31 insertions, 33 deletions

diff --git a/src/mesa/drivers/dri/i965/brw_context.c b/src/mesa/drivers/dri/i965/brw_context.c
index c7a66cb..5e3c9d1 100644
--- a/src/mesa/drivers/dri/i965/brw_context.c
+++ b/src/mesa/drivers/dri/i965/brw_context.c
@@ -239,8 +239,9 @@ intel_update_state(struct gl_context * ctx, GLuint new_state)
 
    /* Resolve color for each active shader image. */
    for (unsigned i = 0; i < MESA_SHADER_STAGES; i++) {
-      const struct gl_shader *shader = ctx->_Shader->CurrentProgram[i] ?
-         ctx->_Shader->CurrentProgram[i]->_LinkedShaders[i] : NULL;
+      const struct gl_linked_shader *shader =
+         ctx->_Shader->CurrentProgram[i] ?
+            ctx->_Shader->CurrentProgram[i]->_LinkedShaders[i] : NULL;
 
       if (unlikely(shader && shader->NumImages)) {
          for (unsigned j = 0; j < shader->NumImages; j++) {
diff --git a/src/mesa/drivers/dri/i965/brw_context.h b/src/mesa/drivers/dri/i965/brw_context.h
index 9d7a5b4..cc03278 100644
--- a/src/mesa/drivers/dri/i965/brw_context.h
+++ b/src/mesa/drivers/dri/i965/brw_context.h
@@ -366,7 +366,7 @@ struct brw_compute_program {
 
 
 struct brw_shader {
-   struct gl_shader base;
+   struct gl_linked_shader base;
 
    bool compiled_once;
 };
@@ -1581,15 +1581,15 @@ brw_update_sol_surface(struct brw_context *brw,
                        uint32_t *out_offset, unsigned num_vector_components,
                        unsigned stride_dwords, unsigned offset_dwords);
 void brw_upload_ubo_surfaces(struct brw_context *brw,
-			     struct gl_shader *shader,
+			     struct gl_linked_shader *shader,
                              struct brw_stage_state *stage_state,
                              struct brw_stage_prog_data *prog_data);
 void brw_upload_abo_surfaces(struct brw_context *brw,
-                             struct gl_shader *shader,
+                             struct gl_linked_shader *shader,
                              struct brw_stage_state *stage_state,
                              struct brw_stage_prog_data *prog_data);
 void brw_upload_image_surfaces(struct brw_context *brw,
-                               struct gl_shader *shader,
+                               struct gl_linked_shader *shader,
                                struct brw_stage_state *stage_state,
                                struct brw_stage_prog_data *prog_data);
 
diff --git a/src/mesa/drivers/dri/i965/brw_gs.c b/src/mesa/drivers/dri/i965/brw_gs.c
index 4ac1009..1ce74d8 100644
--- a/src/mesa/drivers/dri/i965/brw_gs.c
+++ b/src/mesa/drivers/dri/i965/brw_gs.c
@@ -98,7 +98,6 @@ brw_codegen_gs_prog(struct brw_context *brw,
                     struct brw_gs_prog_key *key)
 {
    struct brw_compiler *compiler = brw->intelScreen->compiler;
-   struct gl_shader *shader = prog->_LinkedShaders[MESA_SHADER_GEOMETRY];
    struct brw_stage_state *stage_state = &brw->gs.base;
    struct brw_gs_prog_data prog_data;
    bool start_busy = false;
@@ -117,7 +116,7 @@ brw_codegen_gs_prog(struct brw_context *brw,
     * padding around uniform values below vec4 size, so the worst case is that
     * every uniform is a float which gets padded to the size of a vec4.
     */
-   struct gl_shader *gs = prog->_LinkedShaders[MESA_SHADER_GEOMETRY];
+   struct gl_linked_shader *gs = prog->_LinkedShaders[MESA_SHADER_GEOMETRY];
    struct brw_shader *bgs = (struct brw_shader *) gs;
    int param_count = gp->program.Base.nir->num_uniforms / 4;
 
@@ -161,7 +160,7 @@ brw_codegen_gs_prog(struct brw_context *brw,
    char *error_str;
    const unsigned *program =
       brw_compile_gs(brw->intelScreen->compiler, brw, mem_ctx, key,
-                     &prog_data, shader->Program->nir, prog,
+                     &prog_data, gs->Program->nir, prog,
                      st_index, &program_size, &error_str);
    if (program == NULL) {
       ralloc_free(mem_ctx);
diff --git a/src/mesa/drivers/dri/i965/brw_link.cpp b/src/mesa/drivers/dri/i965/brw_link.cpp
index 76c580b..5374685 100644
--- a/src/mesa/drivers/dri/i965/brw_link.cpp
+++ b/src/mesa/drivers/dri/i965/brw_link.cpp
@@ -43,12 +43,12 @@ static bool
 brw_shader_precompile(struct gl_context *ctx,
                       struct gl_shader_program *sh_prog)
 {
-   struct gl_shader *vs = sh_prog->_LinkedShaders[MESA_SHADER_VERTEX];
-   struct gl_shader *tcs = sh_prog->_LinkedShaders[MESA_SHADER_TESS_CTRL];
-   struct gl_shader *tes = sh_prog->_LinkedShaders[MESA_SHADER_TESS_EVAL];
-   struct gl_shader *gs = sh_prog->_LinkedShaders[MESA_SHADER_GEOMETRY];
-   struct gl_shader *fs = sh_prog->_LinkedShaders[MESA_SHADER_FRAGMENT];
-   struct gl_shader *cs = sh_prog->_LinkedShaders[MESA_SHADER_COMPUTE];
+   struct gl_linked_shader *vs = sh_prog->_LinkedShaders[MESA_SHADER_VERTEX];
+   struct gl_linked_shader *tcs = sh_prog->_LinkedShaders[MESA_SHADER_TESS_CTRL];
+   struct gl_linked_shader *tes = sh_prog->_LinkedShaders[MESA_SHADER_TESS_EVAL];
+   struct gl_linked_shader *gs = sh_prog->_LinkedShaders[MESA_SHADER_GEOMETRY];
+   struct gl_linked_shader *fs = sh_prog->_LinkedShaders[MESA_SHADER_FRAGMENT];
+   struct gl_linked_shader *cs = sh_prog->_LinkedShaders[MESA_SHADER_COMPUTE];
 
    if (fs && !brw_fs_precompile(ctx, sh_prog, fs->Program))
       return false;
@@ -89,7 +89,7 @@ static void
 process_glsl_ir(gl_shader_stage stage,
                 struct brw_context *brw,
                 struct gl_shader_program *shader_prog,
-                struct gl_shader *shader)
+                struct gl_linked_shader *shader)
 {
    struct gl_context *ctx = &brw->ctx;
    const struct brw_compiler *compiler = brw->intelScreen->compiler;
@@ -186,16 +186,14 @@ process_glsl_ir(gl_shader_stage stage,
    }
 }
 
-extern "C" struct gl_shader *
-brw_new_shader(struct gl_context *ctx, GLuint name, gl_shader_stage stage)
+extern "C" struct gl_linked_shader *
+brw_new_shader(gl_shader_stage stage)
 {
    struct brw_shader *shader;
 
    shader = rzalloc(NULL, struct brw_shader);
    if (shader) {
       shader->base.Stage = stage;
-      shader->base.Name = name;
-      _mesa_init_shader(ctx, &shader->base);
    }
 
    return &shader->base;
@@ -209,13 +207,13 @@ brw_link_shader(struct gl_context *ctx, struct gl_shader_program *shProg)
    unsigned int stage;
 
    for (stage = 0; stage < ARRAY_SIZE(shProg->_LinkedShaders); stage++) {
-      struct gl_shader *shader = shProg->_LinkedShaders[stage];
+      struct gl_linked_shader *shader = shProg->_LinkedShaders[stage];
       if (!shader)
          continue;
 
       struct gl_program *prog =
          ctx->Driver.NewProgram(ctx, _mesa_shader_stage_to_program(stage),
-                                shader->Name);
+                                0);
       if (!prog)
         return false;
       prog->Parameters = _mesa_new_parameter_list();
diff --git a/src/mesa/drivers/dri/i965/brw_program.c b/src/mesa/drivers/dri/i965/brw_program.c
index a1a8116..aee9467 100644
--- a/src/mesa/drivers/dri/i965/brw_program.c
+++ b/src/mesa/drivers/dri/i965/brw_program.c
@@ -651,7 +651,7 @@ brw_stage_prog_data_free(const void *p)
 
 void
 brw_dump_ir(const char *stage, struct gl_shader_program *shader_prog,
-            struct gl_shader *shader, struct gl_program *prog)
+            struct gl_linked_shader *shader, struct gl_program *prog)
 {
    if (shader_prog) {
       if (shader->ir) {
diff --git a/src/mesa/drivers/dri/i965/brw_program.h b/src/mesa/drivers/dri/i965/brw_program.h
index 4d6299f..5874d93 100644
--- a/src/mesa/drivers/dri/i965/brw_program.h
+++ b/src/mesa/drivers/dri/i965/brw_program.h
@@ -60,7 +60,7 @@ brw_stage_prog_data_free(const void *prog_data);
 
 void
 brw_dump_ir(const char *stage, struct gl_shader_program *shader_prog,
-            struct gl_shader *shader, struct gl_program *prog);
+            struct gl_linked_shader *shader, struct gl_program *prog);
 
 void brw_upload_tcs_prog(struct brw_context *brw,
                          uint64_t per_vertex_slots, uint32_t per_patch_slots);
diff --git a/src/mesa/drivers/dri/i965/brw_shader.cpp b/src/mesa/drivers/dri/i965/brw_shader.cpp
index 5ce7b82..f3b5487 100644
--- a/src/mesa/drivers/dri/i965/brw_shader.cpp
+++ b/src/mesa/drivers/dri/i965/brw_shader.cpp
@@ -1158,7 +1158,7 @@ brw_assign_common_binding_table_offsets(gl_shader_stage stage,
                                         struct brw_stage_prog_data *stage_prog_data,
                                         uint32_t next_binding_table_offset)
 {
-   const struct gl_shader *shader = NULL;
+   const struct gl_linked_shader *shader = NULL;
    int num_textures = _mesa_fls(prog->SamplersUsed);
 
    if (shader_prog)
@@ -1320,7 +1320,7 @@ brw_compile_tes(const struct brw_compiler *compiler,
                 char **error_str)
 {
    const struct brw_device_info *devinfo = compiler->devinfo;
-   struct gl_shader *shader =
+   struct gl_linked_shader *shader =
       shader_prog->_LinkedShaders[MESA_SHADER_TESS_EVAL];
    const bool is_scalar = compiler->scalar_stage[MESA_SHADER_TESS_EVAL];
 
diff --git a/src/mesa/drivers/dri/i965/brw_shader.h b/src/mesa/drivers/dri/i965/brw_shader.h
index d74c6d6..dd9eb2d 100644
--- a/src/mesa/drivers/dri/i965/brw_shader.h
+++ b/src/mesa/drivers/dri/i965/brw_shader.h
@@ -289,8 +289,7 @@ bool brw_cs_precompile(struct gl_context *ctx,
                        struct gl_program *prog);
 
 GLboolean brw_link_shader(struct gl_context *ctx, struct gl_shader_program *prog);
-struct gl_shader *brw_new_shader(struct gl_context *ctx, GLuint name,
-                                 gl_shader_stage stage);
+struct gl_linked_shader *brw_new_shader(gl_shader_stage stage);
 
 int type_size_scalar(const struct glsl_type *type);
 int type_size_vec4(const struct glsl_type *type);
diff --git a/src/mesa/drivers/dri/i965/brw_tcs.c b/src/mesa/drivers/dri/i965/brw_tcs.c
index d488715..3ba9f2c 100644
--- a/src/mesa/drivers/dri/i965/brw_tcs.c
+++ b/src/mesa/drivers/dri/i965/brw_tcs.c
@@ -197,7 +197,7 @@ brw_codegen_tcs_prog(struct brw_context *brw,
     * padding around uniform values below vec4 size, so the worst case is that
     * every uniform is a float which gets padded to the size of a vec4.
     */
-   struct gl_shader *tcs = shader_prog ?
+   struct gl_linked_shader *tcs = shader_prog ?
       shader_prog->_LinkedShaders[MESA_SHADER_TESS_CTRL] : NULL;
    int param_count = nir->num_uniforms / 4;
 
diff --git a/src/mesa/drivers/dri/i965/brw_tes.c b/src/mesa/drivers/dri/i965/brw_tes.c
index d7b3e69..001655d 100644
--- a/src/mesa/drivers/dri/i965/brw_tes.c
+++ b/src/mesa/drivers/dri/i965/brw_tes.c
@@ -150,7 +150,8 @@ brw_codegen_tes_prog(struct brw_context *brw,
     * padding around uniform values below vec4 size, so the worst case is that
     * every uniform is a float which gets padded to the size of a vec4.
     */
-   struct gl_shader *tes = shader_prog->_LinkedShaders[MESA_SHADER_TESS_EVAL];
+   struct gl_linked_shader *tes =
+      shader_prog->_LinkedShaders[MESA_SHADER_TESS_EVAL];
    int param_count = nir->num_uniforms / 4;
 
    prog_data.base.base.param =
diff --git a/src/mesa/drivers/dri/i965/brw_wm_surface_state.c b/src/mesa/drivers/dri/i965/brw_wm_surface_state.c
index eed16ac..c101e05 100644
--- a/src/mesa/drivers/dri/i965/brw_wm_surface_state.c
+++ b/src/mesa/drivers/dri/i965/brw_wm_surface_state.c
@@ -946,7 +946,7 @@ const struct brw_tracked_state brw_cs_texture_surfaces = {
 
 void
 brw_upload_ubo_surfaces(struct brw_context *brw,
-			struct gl_shader *shader,
+			struct gl_linked_shader *shader,
                         struct brw_stage_state *stage_state,
                         struct brw_stage_prog_data *prog_data)
 {
@@ -1064,7 +1064,7 @@ const struct brw_tracked_state brw_cs_ubo_surfaces = {
 
 void
 brw_upload_abo_surfaces(struct brw_context *brw,
-                        struct gl_shader *shader,
+                        struct gl_linked_shader *shader,
                         struct brw_stage_state *stage_state,
                         struct brw_stage_prog_data *prog_data)
 {
@@ -1350,7 +1350,7 @@ update_image_surface(struct brw_context *brw,
 
 void
 brw_upload_image_surfaces(struct brw_context *brw,
-                          struct gl_shader *shader,
+                          struct gl_linked_shader *shader,
                           struct brw_stage_state *stage_state,
                           struct brw_stage_prog_data *prog_data)
 {