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Cleanup a bunch of shader infrastructure

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1) No longer us glScissor. It's an awful API and is not available in
   Vulkan. Instead the graphics drawing code ensures the graphic is
   drawn within the current viewport

2) Use generated code to automatically get the locations of uniforms
   from shaders. Greatly simplifies adding new uniforms to a shader.

3) Dont use a VAO for loading graphics vertices. Greatly simplifies
   a bunch of book keeping code.
This commit is contained in:
Kovid Goyal
2023-06-22 19:26:36 +05:30
parent 098a38a3a9
commit 248301f8b3
10 changed files with 254 additions and 221 deletions
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7
kitty/state.h
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@@ -100,7 +100,7 @@ typedef struct WindowLogoRenderData {
} WindowLogoRenderData;
typedef struct {
ssize_t vao_idx, gvao_idx;
ssize_t vao_idx;
float xstart, ystart, dx, dy;
Screen *screen;
} ScreenRenderData;
@@ -224,7 +224,6 @@ typedef struct {
monotonic_t last_render_frame_received_at;
uint64_t render_calls;
id_type last_focused_counter;
ssize_t gvao_idx;
CloseRequest close_request;
} OSWindow;
@@ -290,8 +289,8 @@ void draw_borders(ssize_t vao_idx, unsigned int num_border_rects, BorderRect *re
ssize_t create_cell_vao(void);
ssize_t create_graphics_vao(void);
ssize_t create_border_vao(void);
bool send_cell_data_to_gpu(ssize_t, ssize_t, float, float, float, float, Screen *, OSWindow *);
void draw_cells(ssize_t, ssize_t, const ScreenRenderData*, OSWindow *, bool, bool, Window*);
bool send_cell_data_to_gpu(ssize_t, float, float, float, float, Screen *, OSWindow *);
void draw_cells(ssize_t, const ScreenRenderData*, OSWindow *, bool, bool, Window*);
void draw_centered_alpha_mask(OSWindow *w, size_t screen_width, size_t screen_height, size_t width, size_t height, uint8_t *canvas);
void update_surface_size(int, int, uint32_t);
void free_texture(uint32_t*);