comparison: src/texture.c
src/texture.c
- changeset 89
- e1f682a8a145
- parent 88
- 6234b7ea48f3
equal
deleted
inserted
replaced
| 88:6234b7ea48f3 | 89:e1f682a8a145 |
|---|---|
| 29 #include "ascension/texture.h" | 29 #include "ascension/texture.h" |
| 30 #include "ascension/error.h" | 30 #include "ascension/error.h" |
| 31 #include "ascension/filesystem.h" | 31 #include "ascension/filesystem.h" |
| 32 | 32 |
| 33 #include <assert.h> | 33 #include <assert.h> |
| 34 #include <cx/utils.h> | |
| 34 #include <GL/glew.h> | 35 #include <GL/glew.h> |
| 35 #include <SDL2/SDL_image.h> | 36 #include <SDL2/SDL_image.h> |
| 36 | 37 |
| 37 void asc_texture_bind(AscTexture const *tex, int uniform_location, int unit) { | 38 void asc_texture_bind(AscTexture const *tex, int uniform_location, int unit) { |
| 38 glActiveTexture(GL_TEXTURE0 + unit); | 39 glActiveTexture(GL_TEXTURE0 + unit); |
| 44 glUniform1i(uniform_location, unit); | 45 glUniform1i(uniform_location, unit); |
| 45 asc_error_catch_all_gl(); | 46 asc_error_catch_all_gl(); |
| 46 } | 47 } |
| 47 | 48 |
| 48 void asc_texture_from_surface(AscTexture *tex, SDL_Surface const *surface) { | 49 void asc_texture_from_surface(AscTexture *tex, SDL_Surface const *surface) { |
| 49 if (asc_texture_uninitialized(tex)) { | 50 if (tex->tex_id == 0) { |
| 50 asc_error("Tried to use uninitialized texture."); | 51 asc_error("Tried to use uninitialized texture."); |
| 51 asc_dprintf("Texture address: %"PRIxPTR, (uintptr_t) tex); | 52 asc_dprintf("Texture address: %"PRIxPTR, (uintptr_t) tex); |
| 52 return; | 53 return; |
| 53 } | 54 } |
| 54 tex->width = surface->w; | 55 tex->width = surface->w; |
| 107 SDL_FreeSurface(image); | 108 SDL_FreeSurface(image); |
| 108 } | 109 } |
| 109 | 110 |
| 110 void asc_texture_init( | 111 void asc_texture_init( |
| 111 AscTexture *tex, | 112 AscTexture *tex, |
| 113 unsigned count, | |
| 112 enum asc_texture_target target, | 114 enum asc_texture_target target, |
| 113 enum asc_texture_min_filter min_filter, | 115 enum asc_texture_min_filter min_filter, |
| 114 enum asc_texture_mag_filter mag_filter | 116 enum asc_texture_mag_filter mag_filter |
| 115 ) { | 117 ) { |
| 116 static const GLenum texture_targets[] = { | 118 static const GLenum texture_targets[] = { |
| 126 GL_LINEAR_MIPMAP_LINEAR | 128 GL_LINEAR_MIPMAP_LINEAR |
| 127 }; | 129 }; |
| 128 assert(target < sizeof(texture_targets) / sizeof(GLenum)); | 130 assert(target < sizeof(texture_targets) / sizeof(GLenum)); |
| 129 assert(min_filter < sizeof(texture_filters) / sizeof(GLint)); | 131 assert(min_filter < sizeof(texture_filters) / sizeof(GLint)); |
| 130 assert(mag_filter < 2); // mag filter only supports nearest/linear | 132 assert(mag_filter < 2); // mag filter only supports nearest/linear |
| 131 tex->target = texture_targets[target]; | 133 |
| 132 glGenTextures(1, &tex->tex_id); | 134 GLuint textures[count]; |
| 133 glBindTexture(tex->target, tex->tex_id); | 135 glGenTextures(count, textures); |
| 134 glTexParameteri(tex->target, GL_TEXTURE_MIN_FILTER, | 136 |
| 135 texture_filters[min_filter]); | 137 for (unsigned i = 0; i < count; ++i) { |
| 136 glTexParameteri(tex->target, GL_TEXTURE_MAG_FILTER, | 138 memset(&tex[i], 0, sizeof(AscTexture)); |
| 137 texture_filters[mag_filter]); | 139 tex[i].tex_id = textures[i]; |
| 138 asc_dprintf("Initialized texture: %u", tex->tex_id); | 140 tex[i].target = texture_targets[target]; |
| 141 glBindTexture(tex[i].target, tex[i].tex_id); | |
| 142 glTexParameteri(tex[i].target, GL_TEXTURE_MIN_FILTER, | |
| 143 texture_filters[min_filter]); | |
| 144 glTexParameteri(tex[i].target, GL_TEXTURE_MAG_FILTER, | |
| 145 texture_filters[mag_filter]); | |
| 146 asc_dprintf("Initialized texture: %u", tex[i].tex_id); | |
| 147 } | |
| 148 | |
| 149 // TODO: proper error handling for each gl call | |
| 139 asc_error_catch_all_gl(); | 150 asc_error_catch_all_gl(); |
| 140 } | 151 } |
| 141 | 152 |
| 142 void asc_texture_destroy(AscTexture *tex) { | 153 void asc_texture_destroy(AscTexture *tex, unsigned count) { |
| 143 asc_dprintf("Destroy texture: %u", tex->tex_id); | 154 GLuint textures[count]; |
| 144 glDeleteTextures(1, &tex->tex_id); | 155 for (unsigned i = 0; i < count; ++i) { |
| 156 if (tex[i].refcount > 0) { | |
| 157 // TODO: asc_wprintf() for warnings | |
| 158 asc_dprintf("Texture %u still in use by %u objects.", | |
| 159 tex[i].tex_id, tex[i].refcount); | |
| 160 } | |
| 161 asc_dprintf("Destroy texture: %u", tex[i].tex_id); | |
| 162 textures[i] = tex[i].tex_id; | |
| 163 memset(&tex[i], 0, sizeof(AscTexture)); | |
| 164 } | |
| 165 glDeleteTextures(count, textures); | |
| 145 } | 166 } |
