glrenderer: Move ProgramState into Program

There is no real reason to have this on the side indexed via the
index, as it is stored next to each other anyway. Plus, storing them
together lets use use `Program` structures not in the array.

gsk/gl/gskglrenderer.c

@@ -2919,7 +2919,7 @@ gsk_gl_renderer_programs_new (void)
   programs->ref_count = 1;
   for (i = 0; i < GL_N_PROGRAMS; i ++)
     {
-      programs->state[i].opacity = 1.0f;
+      programs->programs[i].state.opacity = 1.0f;
     }
 
   return programs;
@@ -2944,7 +2944,7 @@ gsk_gl_renderer_programs_unref (GskGLRendererPrograms *programs)
         {
           if (programs->programs[i].id > 0)
             glDeleteProgram (programs->programs[i].id);
-          gsk_transform_unref (programs->state[i].modelview);
+          gsk_transform_unref (programs->programs[i].state.modelview);
         }
       g_free (programs);
     }

gsk/gl/gskglrenderops.c

@@ -60,7 +60,7 @@ get_current_program_state (RenderOpBuilder *builder)
   if (!builder->current_program)
     return NULL;
 
-  return &builder->programs->state[builder->current_program->index];
+  return &builder->current_program->state;
 }
 
 void
@@ -218,10 +218,10 @@ ops_free (RenderOpBuilder *builder)
 
 void
 ops_set_program (RenderOpBuilder *builder,
-                 const Program   *program)
+                 Program   *program)
 {
   OpProgram *op;
-  ProgramState *program_state;
+  ProgramState *program_state = NULL;
 
   if (builder->current_program == program)
     return;
@@ -231,7 +231,7 @@ ops_set_program (RenderOpBuilder *builder,
 
   builder->current_program = program;
 
-  program_state = &builder->programs->state[program->index];
+  program_state = &program->state;
 
   if (memcmp (&builder->current_projection, &program_state->projection, sizeof (graphene_matrix_t)) != 0)
     {

gsk/gl/gskglrenderopsprivate.h

@@ -31,6 +31,57 @@ typedef struct
   OpsMatrixMetadata metadata;
 } MatrixStackEntry;
 
+typedef struct
+{
+  GskTransform *modelview;
+  GskRoundedRect clip;
+  graphene_matrix_t projection;
+  int source_texture;
+  graphene_rect_t viewport;
+  float opacity;
+  /* Per-program state */
+  union {
+    GdkRGBA color;
+    struct {
+      graphene_matrix_t matrix;
+      graphene_vec4_t offset;
+    } color_matrix;
+    struct {
+      float widths[4];
+      GdkRGBA color;
+      GskRoundedRect outline;
+    } border;
+    struct {
+      GskRoundedRect outline;
+      float dx;
+      float dy;
+      float spread;
+      GdkRGBA color;
+    } inset_shadow;
+    struct {
+      GskRoundedRect outline;
+      float dx;
+      float dy;
+      float spread;
+      GdkRGBA color;
+    } unblurred_outset_shadow;
+    struct {
+      int n_color_stops;
+      GskColorStop color_stops[GL_MAX_GRADIENT_STOPS];
+      float start_point[2];
+      float end_point[2];
+    } linear_gradient;
+    struct {
+      int n_color_stops;
+      GskColorStop color_stops[GL_MAX_GRADIENT_STOPS];
+      float center[2];
+      float start;
+      float end;
+      float radius[2]; /* h/v */
+    } radial_gradient;
+  };
+} ProgramState;
+
 struct _Program
 {
   int index;        /* Into the renderer's program array */
@@ -109,59 +160,9 @@ struct _Program
       int texture_rect_location;
     } repeat;
   };
+  ProgramState state;
 };
 
-typedef struct
-{
-  GskTransform *modelview;
-  GskRoundedRect clip;
-  graphene_matrix_t projection;
-  int source_texture;
-  graphene_rect_t viewport;
-  float opacity;
-  /* Per-program state */
-  union {
-    GdkRGBA color;
-    struct {
-      graphene_matrix_t matrix;
-      graphene_vec4_t offset;
-    } color_matrix;
-    struct {
-      float widths[4];
-      GdkRGBA color;
-      GskRoundedRect outline;
-    } border;
-    struct {
-      GskRoundedRect outline;
-      float dx;
-      float dy;
-      float spread;
-      GdkRGBA color;
-    } inset_shadow;
-    struct {
-      GskRoundedRect outline;
-      float dx;
-      float dy;
-      float spread;
-      GdkRGBA color;
-    } unblurred_outset_shadow;
-    struct {
-      int n_color_stops;
-      GskColorStop color_stops[GL_MAX_GRADIENT_STOPS];
-      float start_point[2];
-      float end_point[2];
-    } linear_gradient;
-    struct {
-      int n_color_stops;
-      GskColorStop color_stops[GL_MAX_GRADIENT_STOPS];
-      float center[2];
-      float start;
-      float end;
-      float radius[2]; /* h/v */
-    } radial_gradient;
-  };
-} ProgramState;
-
 typedef struct {
   int ref_count;
   union {
@@ -189,7 +190,7 @@ typedef struct {
 typedef struct
 {
   GskGLRendererPrograms *programs;
-  const Program *current_program;
+  Program *current_program;
   int current_render_target;
   int current_texture;
 
@@ -236,7 +237,7 @@ void              ops_pop_modelview      (RenderOpBuilder         *builder);
 float             ops_get_scale          (const RenderOpBuilder   *builder);
 
 void              ops_set_program        (RenderOpBuilder         *builder,
-                                          const Program           *program);
+                                          Program                 *program);
 
 void              ops_push_clip          (RenderOpBuilder         *builder,
                                           const GskRoundedRect    *clip);