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-rw-r--r--src/rodeo.c188
1 files changed, 173 insertions, 15 deletions
diff --git a/src/rodeo.c b/src/rodeo.c
index 3885ceb..18c1666 100644
--- a/src/rodeo.c
+++ b/src/rodeo.c
@@ -1,10 +1,10 @@
#include "SDL2/SDL.h"
#include "SDL2/SDL_syswm.h"
#include "bgfx/c99/bgfx.h"
+#include "cglm/cglm.h"
#include "rodeo.h"
-
-//static Rodeo__data_t Rodeo__State = { 0 };
+#include "rodeo_math.h"
void
Rodeo__\
@@ -27,13 +27,13 @@ init_window(
}
state->window = SDL_CreateWindow(
- title,
- SDL_WINDOWPOS_UNDEFINED,
- SDL_WINDOWPOS_UNDEFINED,
- screen_width,
- screen_height,
- SDL_WINDOW_SHOWN
- );
+ title,
+ SDL_WINDOWPOS_UNDEFINED,
+ SDL_WINDOWPOS_UNDEFINED,
+ screen_width,
+ screen_height,
+ SDL_WINDOW_SHOWN
+ );
if(state->window == NULL)
{
@@ -64,14 +64,13 @@ init_window(
bgfx_init_t init = {0};
bgfx_init_ctor(&init);
init.type = BGFX_RENDERER_TYPE_COUNT; // auto determine renderer
+ //init.type = BGFX_RENDERER_TYPE_OPENGL; // force opengl renderer
init.resolution.width = state->screen_width;
init.resolution.height = state->screen_height;
init.resolution.reset = BGFX_RESET_VSYNC;
init.platformData = pd;
bgfx_init(&init);
- bgfx_reset(state->screen_width, state->screen_height, BGFX_RESET_VSYNC, init.resolution.format);
-
bgfx_set_debug(BGFX_DEBUG_TEXT);
bgfx_set_view_clear(
@@ -83,15 +82,32 @@ init_window(
);
bgfx_set_view_rect(0, 0, 0, state->screen_width, state->screen_height);
- bgfx_touch(0);
+ bgfx_vertex_layout_begin(&state->vertex_layout, bgfx_get_renderer_type());
+ bgfx_vertex_layout_add(&state->vertex_layout, BGFX_ATTRIB_POSITION, 3, BGFX_ATTRIB_TYPE_FLOAT, false, false);
+ bgfx_vertex_layout_add(&state->vertex_layout, BGFX_ATTRIB_COLOR0, 4, BGFX_ATTRIB_TYPE_UINT8, true, false);
+ bgfx_vertex_layout_end(&state->vertex_layout);
- bgfx_frame(false);
+ state->vertex_buffer_handle = bgfx_create_dynamic_vertex_buffer(RODEO__MAX_VERTEX_SIZE, &state->vertex_layout, BGFX_BUFFER_NONE);
+
+ state->index_buffer_handle = bgfx_create_dynamic_index_buffer((RODEO__MAX_VERTEX_SIZE / 4) * 6, BGFX_BUFFER_NONE);
+
+ // load shaders
+ state->vertex_shader = Rodeo__load_shader("./external/RodeoEngine/build_dir/simple.vertex.bin");
+ state->fragment_shader = Rodeo__load_shader("./external/RodeoEngine/build_dir/simple.fragment.bin");
+ state->program_shader = bgfx_create_program(
+ state->vertex_shader,
+ state->fragment_shader,
+ true
+ );
}
void
Rodeo__\
deinit_window(Rodeo__data_t* state)
{
+ bgfx_destroy_dynamic_index_buffer(state->index_buffer_handle);
+ bgfx_destroy_dynamic_vertex_buffer(state->vertex_buffer_handle);
+ bgfx_destroy_program(state->program_shader);
bgfx_shutdown();
SDL_DestroyWindow(state->window);
}
@@ -107,12 +123,37 @@ void
Rodeo__\
begin(Rodeo__data_t* state)
{
+ //vec3 eye = {0.0f, 0.0f, -35.0f};
+ //vec3 center = {0.0f, 0.0f, 0.0f};
+ //vec3 up = {0, 1, 0};
+ mat4 view;
+ //glm_lookat(eye, center, up, view);
+ glm_mat4_identity(view);
+
+ mat4 proj;
+ //glm_perspective(glm_rad(60.f), 640.f / 480.f, 0.1f, 100.0f, proj);
+ glm_ortho(
+ 0,
+ state->screen_width,
+ state->screen_height,
+ 0,
+ 100.0f, // backwards because winding is wrong
+ -0.1f, // TODO: fix cglm winding order
+ proj
+ );
+ bgfx_set_view_transform(0, view, proj);
+ bgfx_set_view_rect(0, 0, 0, state->screen_width, state->screen_height);
+ bgfx_touch(0);
}
void
Rodeo__\
end(Rodeo__data_t* state)
{
+ Rodeo__flush_batch(state);
+
+ bgfx_frame(false);
+
while(SDL_PollEvent(&state->sdl_event))
{
if(state->sdl_event.type == SDL_QUIT)
@@ -120,8 +161,6 @@ end(Rodeo__data_t* state)
state->quit = true;
}
}
- bgfx_touch(0);
- bgfx_frame(false);
}
void
@@ -133,3 +172,122 @@ draw_debug_text(u_int16_t x, u_int16_t y, const char *format, ...)
bgfx_dbg_text_vprintf(x, y, 0x65, format, argList);
va_end(argList);
}
+
+const char *
+Rodeo__\
+get_renderer_name_as_string()
+{
+ return bgfx_get_renderer_name(bgfx_get_renderer_type());
+}
+
+void
+Rodeo__\
+flush_batch(Rodeo__data_t *state)
+{
+ if(state->vertex_size > 0)
+ {
+ // upload remaining batched vertices
+ bgfx_set_dynamic_vertex_buffer(0, state->vertex_buffer_handle, 0, state->vertex_size);
+ const bgfx_memory_t* vbm = bgfx_copy(state->batched_vertices, sizeof(Rodeo__position_color_vertex_t) * state->vertex_size);
+ bgfx_update_dynamic_vertex_buffer(state->vertex_buffer_handle, 0, vbm);
+
+ // upload remaining batched indices
+ bgfx_set_dynamic_index_buffer(state->index_buffer_handle, 0, state->index_size);
+ const bgfx_memory_t* ibm = bgfx_copy(state->batched_indices, sizeof(uint16_t) * state->index_size);
+ bgfx_update_dynamic_index_buffer(state->index_buffer_handle, 0, ibm);
+
+ // submit vertices & batches
+ bgfx_submit(0, state->program_shader, 0, BGFX_DISCARD_ALL);
+
+ // reset arrays
+ state->vertex_size = 0;
+ state->index_size = 0;
+ state->index_count = 0;
+ }
+}
+
+void
+Rodeo__\
+draw_rectangle(
+ Rodeo__data_t *state,
+ u_int16_t x,
+ u_int16_t y,
+ u_int16_t width,
+ u_int16_t height,
+ struct Rodeo__color_rgba_t color
+)
+{
+ const uint32_t abgr = Rodeo__Math__color_rgba_to_uint32(color);
+ if(state->vertex_size < RODEO__MAX_VERTEX_SIZE)
+ {
+ state->batched_vertices[state->vertex_size] =
+ (Rodeo__position_color_vertex_t)
+ {
+ (float)width + (float)x, (float)height + (float)y, 0.0f, abgr
+ };
+ state->vertex_size += 1;
+ state->batched_vertices[state->vertex_size] =
+ (Rodeo__position_color_vertex_t)
+ {
+ (float)width + (float)x, (float)y, 0.0f, abgr
+ };
+ state->vertex_size += 1;
+ state->batched_vertices[state->vertex_size] =
+ (Rodeo__position_color_vertex_t)
+ {
+ (float)x, (float)y, 0.0f, abgr
+ };
+ state->vertex_size += 1;
+ state->batched_vertices[state->vertex_size] =
+ (Rodeo__position_color_vertex_t)
+ {
+ (float)x, (float)height + (float)y, 0.0f, abgr
+ };
+ state->vertex_size += 1;
+
+ state->batched_indices[state->index_size] = state->index_count;
+ state->index_size += 1;
+ state->batched_indices[state->index_size] = state->index_count + 1;
+ state->index_size += 1;
+ state->batched_indices[state->index_size] = state->index_count + 3;
+ state->index_size += 1;
+ state->batched_indices[state->index_size] = state->index_count + 1;
+ state->index_size += 1;
+ state->batched_indices[state->index_size] = state->index_count + 2;
+ state->index_size += 1;
+ state->batched_indices[state->index_size] = state->index_count + 3;
+ state->index_size += 1;
+ state->index_count += 4;
+ }
+
+ if(state->vertex_size >= RODEO__MAX_VERTEX_SIZE)
+ {
+ Rodeo__flush_batch(state);
+ }
+}
+
+bgfx_shader_handle_t
+Rodeo__\
+load_shader(const char* path)
+{
+ bgfx_shader_handle_t invalid = BGFX_INVALID_HANDLE;
+
+ FILE *file = fopen(path, "rb");
+
+ if(!file)
+ {
+ printf("Error: shader file \"%s\" not found", path);
+ return invalid;
+ }
+
+ fseek(file, 0, SEEK_END);
+ long file_size = ftell(file);
+ fseek(file, 0, SEEK_SET);
+
+ const bgfx_memory_t *mem = bgfx_alloc(file_size + 1);
+ fread(mem->data, 1, file_size, file);
+ mem->data[mem->size - 1] = '\0';
+ fclose(file);
+
+ return bgfx_create_shader(mem);
+}
generated by cgit v1.2.3 (git 2.39.1) at 2026-04-14 17:02:02 +0000