diff options
Diffstat (limited to 'src/gfx/rodeo_gfx.c')
| -rw-r--r-- | src/gfx/rodeo_gfx.c | 161 |
1 files changed, 76 insertions, 85 deletions
diff --git a/src/gfx/rodeo_gfx.c b/src/gfx/rodeo_gfx.c index 33c4be3..f55963a 100644 --- a/src/gfx/rodeo_gfx.c +++ b/src/gfx/rodeo_gfx.c @@ -12,14 +12,12 @@ // -- external -- #include "bgfx/c99/bgfx.h" -#define CGLM_FORCE_DEPTH_ZERO_TO_ONE -#include "cglm/cglm.h" #include "SDL_image.h" #include "SDL.h" // used for timing, need to replace in this file with BGFX at some point static irodeo_gfx_state_t irodeo_gfx_state = {0}; - void +void rodeo_gfx_init(float width, float height) { @@ -139,7 +137,7 @@ rodeo_gfx_init(float width, float height) //bgfx_texture_handle_t default_bgfx_texture = rodeo_texture_2d_create_default(); - irodeo_gfx_state.default_texture.internal_texture = malloc(sizeof(irodeo_gfx_texture_internal_t)); + irodeo_gfx_state.default_texture.data = malloc(sizeof(*irodeo_gfx_state.default_texture.data)); // used for binding textures to shader uniforms irodeo_gfx_state.texture_uniforms[0] = bgfx_create_uniform("default_texture", BGFX_UNIFORM_TYPE_SAMPLER, 1); @@ -152,7 +150,7 @@ rodeo_gfx_init(float width, float height) 0xff, 0xff, 0xff, 0xff, }; - irodeo_gfx_state.default_texture.internal_texture->texture_bgfx = + irodeo_gfx_state.default_texture.data->texture_bgfx = bgfx_create_texture_2d( 1, 1, @@ -168,7 +166,7 @@ rodeo_gfx_init(float width, float height) irodeo_gfx_state.default_texture.width = 1; irodeo_gfx_state.default_texture.height = 1; - irodeo_gfx_state.active_texture_p = &irodeo_gfx_state.default_texture.internal_texture->texture_bgfx; + irodeo_gfx_state.active_texture_p = &irodeo_gfx_state.default_texture.data->texture_bgfx; } SDL_SetWindowResizable(irodeo_window_get(), true); @@ -181,33 +179,22 @@ rodeo_gfx_init(float width, float height) BGFX_TEXTURE_FORMAT_COUNT ); - rodeo_random_seed_set(SDL_GetTicks64()); - irodeo_gfx_state.frame_end = (uint32_t)SDL_GetPerformanceCounter(); } - void +void rodeo_gfx_deinit(void) { - free(irodeo_gfx_state.default_texture.internal_texture); + free(irodeo_gfx_state.default_texture.data); bgfx_destroy_program(irodeo_gfx_state.program_shader); bgfx_shutdown(); } - void +void rodeo_gfx_frame_begin(void) { - //vec3 eye = {0.0f, 0.0f, -35.0f}; - //vec3 center = {0.0f, 0.0f, 0.0f}; - //vec3 up = {0, 1, 0}; - - //glm_lookat(eye, center, up, view); - - glm_mat4_identity(irodeo_gfx_state.view_matrix); - - //glm_perspective(glm_rad(60.f), 640.f / 480.f, 0.1f, 100.0f, proj); // scale the game screen to fit window size with letterbox // what size we declare the game screen to be within @@ -227,29 +214,33 @@ rodeo_gfx_frame_begin(void) result_height *= (game_aspect) / window_aspect; } - // make the game screen centered in the window. - // "2" is 1 full screen width, therefore we multiply - // the target and result ratio by 1 for it to be a - // half of the screen size - vec3 offset = { - 1 - (1 * (target_width / result_width)), // x - -(1 - (1 * (target_height / result_height))), // y - 0 + // get identity + irodeo_gfx_state.view_matrix = rodeo_math_mat4_identity(); + irodeo_gfx_state.proj_matrix = rodeo_math_mat4_identity(); + + // calculate orthographic + rodeo_math_mat4_t ortho = rodeo_math_mat4_orthographic( + 0, + result_width, + result_height, + 0, + -100.0f, + 100.0f + ); + + // calculate translation + rodeo_math_vec3_t offset = { + .val.x = 1 - (1 * (target_width / result_width)), // x + .val.y = -(1 - (1 * (target_height / result_height))), // y + .val.z = 0 }; - glm_ortho_rh_zo( - 0, - result_width, - result_height, - 0, - -100.0f, - 100.0f, - irodeo_gfx_state.proj_matrix - ); - - glm_translated(irodeo_gfx_state.proj_matrix, offset); + // apply translation * orthographic + irodeo_gfx_state.proj_matrix = rodeo_math_mat4_translate(irodeo_gfx_state.proj_matrix, offset); + irodeo_gfx_state.proj_matrix = rodeo_math_mat4_multiply(irodeo_gfx_state.proj_matrix, ortho); - bgfx_set_view_transform(0, irodeo_gfx_state.view_matrix, irodeo_gfx_state.proj_matrix); + // push the result to bgfx + bgfx_set_view_transform(0, irodeo_gfx_state.view_matrix.raw, irodeo_gfx_state.proj_matrix.raw); bgfx_set_view_rect(0, 0, 0, (uint16_t)rodeo_window_width_get(), (uint16_t)rodeo_window_height_get()); irodeo_gfx_render_buffer_transient_alloc(); @@ -258,7 +249,7 @@ rodeo_gfx_frame_begin(void) irodeo_gfx_state.frame_start = irodeo_gfx_state.frame_end; } - void +void rodeo_gfx_frame_end(void) { rodeo_gfx_renderer_flush(); @@ -279,19 +270,19 @@ rodeo_gfx_frame_end(void) #endif } - float +float rodeo_gfx_width_get(void) { return irodeo_gfx_state.target_width; } - float +float rodeo_gfx_height_get(void) { return irodeo_gfx_state.target_height; } - rodeo_rectangle_t +rodeo_rectangle_t rodeo_gfx_letterbox_first_get(void) { const float target_width = irodeo_gfx_state.target_width; @@ -310,7 +301,7 @@ rodeo_gfx_letterbox_first_get(void) result_height *= (game_aspect) / window_aspect; } - rodeo_rectangle_t result = {0}; +rodeo_rectangle_t result = {0}; // while checking for float equality should generally never be done // in this case it is ok because the case where they are exactly equal @@ -329,10 +320,10 @@ rodeo_gfx_letterbox_first_get(void) return result; } - rodeo_rectangle_t +rodeo_rectangle_t rodeo_gfx_letterbox_second_get(void) { - rodeo_rectangle_t result = rodeo_gfx_letterbox_first_get(); +rodeo_rectangle_t result = rodeo_gfx_letterbox_first_get(); if(rodeo_gfx_width_get() != result.width) { // second box needs to be offset to the right result.x += rodeo_gfx_width_get() + result.width; @@ -344,13 +335,13 @@ rodeo_gfx_letterbox_second_get(void) return result; } - float +float rodeo_gfx_frame_time_get(void) { return irodeo_gfx_state.frame_time; //(float)bgfx_get_stats()->cpuTimeFrame; } - float +float rodeo_gfx_frame_perSecond_get(void) { return 1.0f / (rodeo_gfx_frame_time_get() / 1000.0f); @@ -359,7 +350,7 @@ rodeo_gfx_frame_perSecond_get(void) // measures how much time there is left in the remaining frame until // the frame target time is reached. If we surpassed the target time // then this will be negative - float +float irodeo_gfx_frame_remaining_get(void) { #ifdef __EMSCRIPTEN__ @@ -376,7 +367,7 @@ irodeo_gfx_frame_remaining_get(void) // used internally at the end of every frame to fill for time // in order to reach the desired framerate - void +void irodeo_gfx_frame_stall(void) { // if no frame limit then run as fast as possible @@ -400,14 +391,14 @@ irodeo_gfx_frame_stall(void) } } - void +void rodeo_gfx_renderer_flush(void) { // set default texture bgfx_set_texture( 0, irodeo_gfx_state.texture_uniforms[0], - rodeo_gfx_texture_2d_default_get().internal_texture->texture_bgfx, + rodeo_gfx_texture_2d_default_get().data->texture_bgfx, UINT32_MAX ); if(irodeo_gfx_state.active_texture_p != NULL) @@ -426,7 +417,7 @@ rodeo_gfx_renderer_flush(void) bgfx_set_texture( 1, irodeo_gfx_state.texture_uniforms[1], - rodeo_gfx_texture_2d_default_get().internal_texture->texture_bgfx, + rodeo_gfx_texture_2d_default_get().data->texture_bgfx, UINT32_MAX ); } @@ -469,13 +460,13 @@ rodeo_gfx_renderer_flush(void) irodeo_gfx_state.active_texture_p = NULL; } - rodeo_gfx_texture_2d_t +rodeo_gfx_texture_2d_t rodeo_gfx_texture_2d_default_get(void) { return irodeo_gfx_state.default_texture; } - rodeo_gfx_texture_2d_t +rodeo_gfx_texture_2d_t rodeo_gfx_texture_2d_create_from_RGBA8( const uint16_t width, const uint16_t height, @@ -483,9 +474,9 @@ rodeo_gfx_texture_2d_create_from_RGBA8( ) { rodeo_gfx_texture_2d_t texture; - texture.internal_texture = malloc(sizeof(irodeo_gfx_texture_internal_t)); + texture.data = malloc(sizeof(*texture.data)); bgfx_copy(memory, (uint32_t)width * (uint32_t)height * sizeof(uint8_t) * 4); - texture.internal_texture->texture_bgfx = + texture.data->texture_bgfx = bgfx_create_texture_2d( width, height, @@ -502,18 +493,18 @@ rodeo_gfx_texture_2d_create_from_RGBA8( return texture; } - void +void rodeo_gfx_texture_2d_destroy(rodeo_gfx_texture_2d_t texture) { - bgfx_destroy_texture(texture.internal_texture->texture_bgfx); - free(texture.internal_texture); + bgfx_destroy_texture(texture.data->texture_bgfx); + free(texture.data); } - void +void rodeo_gfx_rectangle_draw( - const rodeo_rectangle_t rectangle, - const rodeo_color_RGBAFloat_t color - ) + const rodeo_rectangle_t rectangle, + const rodeo_color_RGBAFloat_t color +) { rodeo_gfx_texture_2d_draw( rectangle, @@ -525,21 +516,21 @@ rodeo_gfx_rectangle_draw( void rodeo_gfx_texture_2d_draw( - // cant be NULL - const rodeo_rectangle_t destination, - // default: entire texture - const rodeo_rectangle_t source, - // default: white - const rodeo_color_RGBAFloat_t color, - // default: default texture - const rodeo_gfx_texture_2d_t texture - ) + // cant be NULL + const rodeo_rectangle_t destination, + // default: entire texture + const rodeo_rectangle_t source, + // default: white + const rodeo_color_RGBAFloat_t color, + // default: default texture + const rodeo_gfx_texture_2d_t texture +) { // whether to use default or custom texture float texture_uniform_slot = 0.0; rodeo_rectangle_t source_applied; - if((source.height != 0 || source.width != 0) && texture.internal_texture != NULL) + if((source.height != 0 || source.width != 0) && texture.data != NULL) { source_applied = (rodeo_rectangle_t){ .x = source.x / (float)texture.width, @@ -562,17 +553,17 @@ rodeo_gfx_texture_2d_draw( // otherwise check what current texture is active // if none or the same: set it // if different: flush and then set it - if(texture.internal_texture != NULL) + if(texture.data != NULL) { if(irodeo_gfx_state.active_texture_p != NULL) { - if(&texture.internal_texture->texture_bgfx != irodeo_gfx_state.active_texture_p) + if(&texture.data->texture_bgfx != irodeo_gfx_state.active_texture_p) { rodeo_gfx_renderer_flush(); } } texture_uniform_slot = 1.0; - irodeo_gfx_state.active_texture_p = &texture.internal_texture->texture_bgfx; + irodeo_gfx_state.active_texture_p = &texture.data->texture_bgfx; } @@ -655,7 +646,7 @@ rodeo_gfx_texture_2d_draw( } } - rodeo_gfx_texture_2d_t +rodeo_gfx_texture_2d_t rodeo_gfx_texture_2d_create_from_path(cstr path) { // load image to surface @@ -711,13 +702,13 @@ rodeo_gfx_texture_2d_create_from_path(cstr path) return texture; } - uint64_t +uint64_t rodeo_gfx_frame_count_get(void) { return irodeo_gfx_state.frame_count; } - void +void rodeo_gfx_frame_limit_set(uint32_t limit) { #ifdef __EMSCRIPTEN__ @@ -730,7 +721,7 @@ rodeo_gfx_frame_limit_set(uint32_t limit) #endif } - uint32_t +uint32_t rodeo_gfx_frame_limit_get(void) { #ifdef __EMSCRIPTEN__ @@ -740,7 +731,7 @@ rodeo_gfx_frame_limit_get(void) #endif } - cstr +cstr rodeo_gfx_renderer_name_get(void) { return cstr_from( @@ -748,7 +739,7 @@ rodeo_gfx_renderer_name_get(void) ); } - bgfx_shader_handle_t +bgfx_shader_handle_t irodeo_gfx_shader_load(const cstr path) { const char* path_cstr = cstr_str(&path); @@ -802,7 +793,7 @@ irodeo_gfx_shader_load(const cstr path) return shader; } - void +void irodeo_gfx_render_buffer_transient_alloc(void) { bgfx_alloc_transient_vertex_buffer(&irodeo_gfx_state.vertex_buffer_handle, mrodeo_vertex_size_max, &irodeo_gfx_state.vertex_layout); |