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big rendering overhaul (cleaning and api abstraction)

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This commit is contained in:
veclavtalica
2025-01-14 23:20:54 +03:00
parent b7cb37c06a
commit 5059802d09
25 changed files with 290 additions and 424 deletions
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41
src/rendering/twn_draw_c.h
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@ -12,27 +12,35 @@
#include <SDL2/SDL.h>
#include <stb_truetype.h>
#ifdef EMSCRIPTEN
#include <GLES2/gl2.h>
#else
#include <glad/glad.h>
#endif
#include <stdbool.h>
extern Matrix4 camera_projection_matrix;
extern Matrix4 camera_look_at_matrix;
extern double depth_range_low, depth_range_high;
#define QUAD_ELEMENT_BUFFER_LENGTH (65536 / 6)
#define CIRCLE_VERTICES_MAX 2048
/* TODO: limit to only most necessary */
enum {
TWN_FLOAT,
TWN_INT,
TWN_SHORT,
TWN_UNSIGNED_SHORT,
TWN_UNSIGNED_INT,
TWN_BYTE,
TWN_UNSIGNED_BYTE,
};
typedef GLuint VertexBuffer;
typedef uint32_t VertexBuffer;
typedef struct VertexBufferBuilder {
size_t bytes_left;
size_t size;
void *mapping;
void *base;
} VertexBufferBuilder;
@ -209,6 +217,8 @@ typedef struct ElementIndexedBillboard {
} ElementIndexedBillboard;
bool render_init(void);
/* renders the background, then the primitives in all render queues */
void render(void);
@ -250,6 +260,8 @@ void text_cache_reset_arena(TextCache *cache);
VertexBuffer create_vertex_buffer(void);
void restart_scratch_vertex_arrays(void);
VertexBuffer get_scratch_vertex_array(void);
void delete_vertex_buffer(VertexBuffer buffer);
@ -274,7 +286,6 @@ void finally_clear_draw_buffer(DeferredCommandClear command);
void swap_buffers(void);
void set_depth_range(double low, double high);
void finally_set_depth_range(DeferredCommandDepthRange command);
VertexBuffer get_quad_element_buffer(void);
@ -284,15 +295,6 @@ void render_circle(const CirclePrimitive *circle);
void render_rectangle(const RectPrimitive *rectangle);
void use_space_pipeline(void);
void finally_use_space_pipeline(void);
void use_2d_pipeline(void);
void finally_use_2d_pipeline(void);
void use_texture_mode(TextureMode mode);
void finally_use_texture_mode(TextureMode mode);
void finally_render_quads(Primitive2D const primitives[],
struct QuadBatch batch,
VertexBuffer buffer);
@ -325,11 +327,6 @@ void finally_draw_text(FontData const *font_data,
void render_skybox(void);
void finally_render_skybox(DeferredCommandDrawSkybox);
void apply_fog(void);
void finally_apply_fog(DeferredCommandApplyFog);
void pop_fog(void);
void finally_pop_fog(void);
void start_render_frame(void);
void end_render_frame(void);