comparison: src/text.c
src/text.c
- changeset 50
- d8d2e4817db1
- parent 48
- 6e5b5ba2752c
- child 52
- 6d100092fcd4
equal
deleted
inserted
replaced
| 49:77493525eac2 | 50:d8d2e4817db1 |
|---|---|
| 31 #include "ascension/shader.h" | 31 #include "ascension/shader.h" |
| 32 | 32 |
| 33 #include <GL/glew.h> | 33 #include <GL/glew.h> |
| 34 | 34 |
| 35 static void asc_text_draw(AscText const *node) { | 35 static void asc_text_draw(AscText const *node) { |
| 36 if (node->color.alpha == 0 || node->hidden || node->tex_id == 0) { | 36 if (node->color.alpha == 0 || node->hidden) { |
| 37 return; | 37 return; |
| 38 } | 38 } |
| 39 | 39 |
| 40 // Obtain shader | 40 // Obtain shader |
| 41 AscShaderSprite *shader = &asc_context.active_window->glctx.shader.sprite; | 41 AscShaderSprite *shader = &asc_context.active_window->glctx.shader.sprite; |
| 42 | 42 |
| 43 // Upload model matrix | 43 // Upload model matrix |
| 44 glUniformMatrix4fv(shader->base.model, 1, | 44 glUniformMatrix4fv(shader->base.model, 1, |
| 45 GL_FALSE, node->base.world_transform); | 45 GL_FALSE, node->base.world_transform); |
| 46 | 46 |
| 47 // Upload surface | 47 // Bind texture |
| 48 glActiveTexture(GL_TEXTURE0); | 48 asc_texture_bind(&node->tex, shader->tex, 0); |
| 49 glBindTexture(GL_TEXTURE_RECTANGLE, node->tex_id); | |
| 50 glUniform1i(shader->surface, 0); | |
| 51 | 49 |
| 52 // Apply depth | 50 // Apply depth |
| 53 glUniform1f(shader->depth, (float)(node->base.depth)); | 51 glUniform1f(shader->depth, (float)(node->base.depth)); |
| 54 | 52 |
| 55 // Draw mesh | 53 // Draw mesh |
| 61 if (node->color.alpha == 0 || node->hidden) { | 59 if (node->color.alpha == 0 || node->hidden) { |
| 62 return; | 60 return; |
| 63 } | 61 } |
| 64 | 62 |
| 65 // Generate new texture, if required | 63 // Generate new texture, if required |
| 66 if (node->tex_id == 0) { | 64 if (asc_texture_uninitialized(&node->tex)) { |
| 67 glGenTextures(1, &node->tex_id); | 65 asc_texture_init_rectangle(&node->tex); |
| 68 glBindTexture(GL_TEXTURE_RECTANGLE, node->tex_id); | |
| 69 glTexParameteri(GL_TEXTURE_RECTANGLE, GL_TEXTURE_MIN_FILTER, GL_LINEAR); | |
| 70 glTexParameteri(GL_TEXTURE_RECTANGLE, GL_TEXTURE_MAG_FILTER, GL_LINEAR); | |
| 71 asc_dprintf("Generated new texture for text node: %u", node->tex_id); | |
| 72 } | 66 } |
| 73 | 67 |
| 74 // Render text onto a surface | 68 // Render text onto a surface |
| 75 SDL_Surface *surface = TTF_RenderUTF8_Blended_Wrapped( | 69 SDL_Surface *surface = TTF_RenderUTF8_Blended_Wrapped( |
| 76 asc_font_cache_validate(node->font)->ptr, | 70 asc_font_cache_validate(node->font)->ptr, |
| 85 node->base.scale.width = (float) surface->w; | 79 node->base.scale.width = (float) surface->w; |
| 86 node->base.scale.height = (float) surface->h; | 80 node->base.scale.height = (float) surface->h; |
| 87 asc_update_transform((AscSceneNode *) node); | 81 asc_update_transform((AscSceneNode *) node); |
| 88 | 82 |
| 89 // Transfer Image Data | 83 // Transfer Image Data |
| 90 // TODO: move the image data transfer to a separate function - we will need it more often | 84 asc_texture_from_surface(&node->tex, surface); |
| 91 glBindTexture(GL_TEXTURE_RECTANGLE, node->tex_id); | |
| 92 glPixelStorei(GL_UNPACK_ROW_LENGTH, surface->pitch / surface->format->BytesPerPixel); | |
| 93 glTexImage2D(GL_TEXTURE_RECTANGLE, 0, GL_RGBA, | |
| 94 surface->w, surface->h, | |
| 95 0, GL_BGRA, GL_UNSIGNED_BYTE, surface->pixels); | |
| 96 | 85 |
| 97 // Free the surface | 86 // Free the surface |
| 98 SDL_FreeSurface(surface); | 87 SDL_FreeSurface(surface); |
| 99 } | 88 } |
| 100 | 89 |
| 101 AscSceneNode *asc_text(int x, int y, char const *text) { | 90 AscSceneNode *asc_text(int x, int y, char const *text) { |
| 102 AscText *node = calloc(1, sizeof(AscText)); | 91 AscText *node = calloc(1, sizeof(AscText)); |
| 103 if (node == NULL) { | |
| 104 asc_error("Out of memory."); | |
| 105 return NULL; | |
| 106 } | |
| 107 | 92 |
| 108 node->base.render_group = ASC_RENDER_GROUP_SPRITE_BLEND; | 93 node->base.render_group = ASC_RENDER_GROUP_SPRITE_BLEND; |
| 109 node->base.free_func = (asc_scene_free_func) asc_text_free; | 94 node->base.free_func = (asc_scene_free_func) asc_text_free; |
| 110 node->base.update_func = (asc_scene_update_func) asc_text_update; | 95 node->base.update_func = (asc_scene_update_func) asc_text_update; |
| 111 node->base.draw_func = (asc_scene_draw_func) asc_text_draw; | 96 node->base.draw_func = (asc_scene_draw_func) asc_text_draw; |
| 123 | 108 |
| 124 return &node->base; | 109 return &node->base; |
| 125 } | 110 } |
| 126 | 111 |
| 127 void asc_text_free(AscText *node) { | 112 void asc_text_free(AscText *node) { |
| 128 asc_dprintf("Release text node texture: %u", node->tex_id); | 113 asc_texture_destroy(&node->tex); |
| 129 glDeleteTextures(1, &node->tex_id); | |
| 130 free(node->text); | 114 free(node->text); |
| 131 free(node); | 115 free(node); |
| 132 } | 116 } |
