started rework

include/drawglx_internal.h

@@ -119,11 +119,11 @@ struct draw_state
     int    program;
     int    dirty;
 
-    GLuint                 texture;
     xoverlay_font_handle_t    font;
     xoverlay_texture_handle_t thandle;
 
     GLuint shader;
+    GLuint texture;
 };
 
 struct draw_state ds;
@@ -149,6 +149,9 @@ ds_pre_render();
 void
 ds_post_render();
 
+void
+ds_start_next_frame();
+
 void
 ds_render_next_frame();
 

src/drawglx_internal.c

@@ -336,15 +336,25 @@ ds_post_render()
 }
 
 void
-ds_render_next_frame()
+ds_start_next_frame()
 {
-    ds_pre_render();
-    dis_finish();
     ds.program = -1;
     ds.thandle = 0;
     ds.font = 0;
     ds.texture = 0;
     ds.shader = 0;
+
+    for (int i = 0; i < PROGRAM_COUNT; ++i)
+    {
+        vertex_buffer_clear(programs[i].vertex);
+    }
+}
+
+void
+ds_render_next_frame()
+{
+    ds_pre_render();
+    dis_finish();
     struct draw_instruction_t *instr;
 
     instr = dis_fetch_instruction();
@@ -369,6 +379,7 @@ ds_render_next_frame()
                 ds_mark_dirty();
                 float *vert = dis_read_data(instr->count * programs[ds.program].vertex_size);
                 vertex_buffer_push_back_vertices(programs[ds.program].vertex, vert, instr->count);
+                vertex_buffer_render()
                 break;
             case DI_PUSH_INDICES:
                 ds_mark_dirty();

src/program_freetype.c

@@ -19,7 +19,6 @@ DECL_PROGRAM_INIT(freetype)
 
 DECL_PROGRAM_LOAD(freetype)
 {
-    vertex_buffer_clear(programs[PROGRAM_FREETYPE].vertex);
     ds_use_shader(programs[PROGRAM_FREETYPE].shader);
     texture_font_t *fnt = fontapi_get(ds.font);
     if (fnt == NULL)

src/program_triangles_plain.c

@@ -19,7 +19,6 @@ DECL_PROGRAM_INIT(triangles_plain)
 DECL_PROGRAM_LOAD(triangles_plain)
 {
     ds_use_shader(programs[PROGRAM_TRIANGLES_PLAIN].shader);
-    vertex_buffer_clear(programs[PROGRAM_TRIANGLES_PLAIN].vertex);
 }
 
 DECL_PROGRAM_RENDER(triangles_plain)

src/program_triangles_textured.c

@@ -19,7 +19,6 @@ DECL_PROGRAM_INIT(triangles_textured)
 DECL_PROGRAM_LOAD(triangles_textured)
 {
     ds_use_shader(programs[PROGRAM_TRIANGLES_TEXTURED].shader);
-    vertex_buffer_clear(programs[PROGRAM_TRIANGLES_TEXTURED].vertex);
 }
 
 DECL_PROGRAM_RENDER(triangles_textured)