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Added support for custom shaders with the GPU renderer

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Added an example of MSDF font rendering with the SDL 2D renderer
This commit is contained in:
Sam Lantinga
2025-03-13 16:41:58 -07:00
parent eb56c8af85
commit 2aee105b43
19 changed files with 1460 additions and 34 deletions
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32
src/render/SDL_sysrender.h
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@@ -118,6 +118,36 @@ struct SDL_Texture
SDL_Texture *next;
};
// Define the GPU render state structure
typedef struct SDL_GPURenderStateUniformBuffer
{
Uint32 slot_index;
void *data;
Uint32 length;
} SDL_GPURenderStateUniformBuffer;
// Define the GPU render state structure
struct SDL_GPURenderState
{
SDL_Renderer *renderer;
Uint32 last_command_generation; // last command queue generation this state was in.
SDL_GPUShader *fragment_shader;
int num_sampler_bindings;
SDL_GPUTextureSamplerBinding *sampler_bindings;
int num_storage_textures;
SDL_GPUTexture **storage_textures;
int num_storage_buffers;
SDL_GPUBuffer **storage_buffers;
int num_uniform_buffers;
SDL_GPURenderStateUniformBuffer *uniform_buffers;
};
typedef enum
{
SDL_RENDERCMD_NO_OP,
@@ -158,6 +188,7 @@ typedef struct SDL_RenderCommand
SDL_Texture *texture;
SDL_ScaleMode texture_scale_mode;
SDL_TextureAddressMode texture_address_mode;
SDL_GPURenderState *gpu_render_state;
} draw;
struct
{
@@ -282,6 +313,7 @@ struct SDL_Renderer
SDL_FColor color; /**< Color for drawing operations values */
SDL_BlendMode blendMode; /**< The drawing blend mode */
SDL_TextureAddressMode texture_address_mode;
SDL_GPURenderState *gpu_render_state;
SDL_RenderCommand *render_commands;
SDL_RenderCommand *render_commands_tail;