State management improvements in Renderer

[libs/gl.git] / source / renderer.h

diff --git a/source/renderer.h b/source/renderer.h
index a4663df87a152d3a0444e48b42e97558e49f2bab..dd9464127d025ee0ae4ba9612084f91617f8ad67 100644 (file)
--- a/source/renderer.h
+++ b/source/renderer.h
@@ -4,6 +4,7 @@
 #include <set>
 #include <vector>
 #include "matrix.h"
+#include "programdata.h"
 #include "tag.h"
 
 namespace Msp {
@@ -13,13 +14,12 @@ class Batch;
 class Buffer;
 class Camera;
 class Material;
+class Mesh;
 class Lighting;
 class Program;
-class ProgramData;
 class Renderable;
 class Texture;
 class Texturing;
-class VertexArray;
 class WindingTest;
 
 /**
@@ -65,11 +65,13 @@ private:
        {
                const Texture *texture;
                const Texturing *texturing;
+               unsigned lowest_effect_texunit;
                const Material *material;
                const Lighting *lighting;
                Matrix lighting_matrix;
                const Program *shprog;
                unsigned shdata_count;
+               const Mesh *mesh;
                const WindingTest *winding_test;
                bool reverse_winding;
 
@@ -87,15 +89,24 @@ private:
                virtual void update();
        };
 
+       enum ChangeMask
+       {
+               LEGACY_MATRIX = 1,
+               MODERN_MATRIX = 2,
+               MATRIX = LEGACY_MATRIX|MODERN_MATRIX,
+               LIGHTING = 4,
+               SHADER_DATA = 8
+       };
+
        MtxStack mtx_stack;
-       bool mtx_changed;
+       unsigned char changed;
+       bool matrices_loaded;
+       unsigned shdata_applied;
        const Camera *camera;
        std::vector<State> state_stack;
        State *state;
-       bool lighting_changed;
+       ProgramData standard_shdata;
        std::vector<const ProgramData *> shdata_stack;
-       bool shdata_changed;
-       const VertexArray *vertex_array;
        const Buffer *element_buffer;
        std::set<const Renderable *> excluded;
 
@@ -109,6 +120,7 @@ public:
 
        void set_texture(const Texture *);
        void set_texturing(const Texturing *);
+       unsigned allocate_effect_texunit();
        void set_material(const Material *);
 
        void set_lighting(const Lighting *);
@@ -122,7 +134,7 @@ public:
        Renderer state is popped. */
        void add_shader_data(const ProgramData &data);
 
-       void set_vertex_array(const VertexArray *);
+       void set_mesh(const Mesh *);
        void set_element_buffer(const Buffer *);
        void set_winding_test(const WindingTest *);
        void set_reverse_winding(bool);
@@ -136,9 +148,13 @@ public:
 
        /** Prepares for temporarily bypassing the Renderer by synchronizing the
        current state with GL.  No additional call is necessary to resume using the
-       Renderer. */
+       Renderer.  DEPRECATED. */
        void escape();
 
+       /** Ends rendering, unbinding all objects and resetting state.  There must
+       be no unpopped state in the stack. */
+       void end();
+
        void exclude(const Renderable &);
        void include(const Renderable &);