comparison: src/text.c
src/text.c
- changeset 32
- 86468a71dd73
- parent 29
- 1d001eb694dc
- child 33
- e7ddb52facd3
equal
deleted
inserted
replaced
| 31:8324037e0148 | 32:86468a71dd73 |
|---|---|
| 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->internal.tex_id == 0) { | 36 if (node->color.alpha == 0 || node->hidden || node->internal.tex_id == 0) { |
| 37 return; | 37 return; |
| 38 } | 38 } |
| 39 | 39 |
| 40 // TODO: when we group draw calls, we don't need to activate shader here | |
| 40 glUseProgram(ASC_SHADER_FONT.base.id); | 41 glUseProgram(ASC_SHADER_FONT.base.id); |
| 41 | 42 |
| 42 // Upload projection | 43 // TODO: when we group UI draw calls, we don't need to upload matrices here |
| 43 // TODO: when we group UI draw calls, we don't need this | 44 // Upload matrices |
| 44 glUniformMatrix4fv(ASC_SHADER_FONT.base.projection, 1, | 45 glUniformMatrix4fv(ASC_SHADER_FONT.base.projection, 1, |
| 45 GL_FALSE, asc_context.active_window->projection); | 46 GL_FALSE, asc_context.active_window->projection); |
| 46 | 47 glUniformMatrix4fv(ASC_SHADER_FONT.base.model, 1, |
| 47 // Upload model matrix | 48 GL_FALSE, node->base.transform); |
| 48 asc_mat4f model = {0}; | |
| 49 model[asc_mat4_index(0, 0)] = node->internal.dimension.width; | |
| 50 model[asc_mat4_index(1, 1)] = node->internal.dimension.height; | |
| 51 model[asc_mat4_index(3, 0)] = node->position.x; | |
| 52 model[asc_mat4_index(3, 1)] = node->position.y; | |
| 53 model[asc_mat4_index(3, 3)] = 1; | |
| 54 glUniformMatrix4fv(ASC_SHADER_FONT.base.model, 1, GL_FALSE, model); | |
| 55 | 49 |
| 56 // Upload surface | 50 // Upload surface |
| 57 glActiveTexture(GL_TEXTURE0); | 51 glActiveTexture(GL_TEXTURE0); |
| 58 glBindTexture(GL_TEXTURE_RECTANGLE, node->internal.tex_id); | 52 glBindTexture(GL_TEXTURE_RECTANGLE, node->internal.tex_id); |
| 59 glUniform1i(ASC_SHADER_FONT.surface, 0); | 53 glUniform1i(ASC_SHADER_FONT.surface, 0); |
| 60 | 54 |
| 61 // Draw mesh | 55 // Draw mesh |
| 62 asc_primitives_draw_plane(); | 56 asc_primitives_draw_plane(); |
| 63 } | 57 } |
| 64 | 58 |
| 65 AscText *asc_text(int x, int y, char const *text) { | 59 static void asc_text_update(AscText *node) { |
| 66 AscText *node = calloc(1, sizeof(AscText)); | |
| 67 if (node == NULL) { | |
| 68 asc_error("Out of memory."); | |
| 69 return NULL; | |
| 70 } | |
| 71 | |
| 72 node->node.free_func = (asc_scene_free_func) asc_text_free; | |
| 73 node->node.draw_func = (asc_scene_draw_func) asc_text_draw; | |
| 74 | |
| 75 node->position = (asc_vec2i) {x, y}; | |
| 76 node->font = asc_context.active_font; | |
| 77 node->color = asc_context.ink; | |
| 78 if (text != NULL) { | |
| 79 node->text = strdup(text); | |
| 80 } | |
| 81 | |
| 82 return node; | |
| 83 } | |
| 84 | |
| 85 void asc_text_update(AscText *node) { | |
| 86 // short circuit if fully transparent or hidden, we don't need anything | 60 // short circuit if fully transparent or hidden, we don't need anything |
| 87 if (node->color.alpha == 0 || node->hidden) { | 61 if (node->color.alpha == 0 || node->hidden) { |
| 88 return; | 62 return; |
| 89 } | 63 } |
| 90 | 64 |
| 107 if (surface == NULL) { | 81 if (surface == NULL) { |
| 108 asc_error(SDL_GetError()); | 82 asc_error(SDL_GetError()); |
| 109 return; | 83 return; |
| 110 } | 84 } |
| 111 | 85 |
| 112 // Store basic node information | 86 // Transform |
| 113 node->position = node->position; | 87 asc_transform_scale(node->base.transform, (float) surface->w, (float) surface->h, 0); |
| 114 node->internal.dimension.width = surface->w; | 88 asc_transform_translate2i(node->base.transform, node->position); |
| 115 node->internal.dimension.height = surface->h; | |
| 116 | 89 |
| 117 // Transfer Image Data | 90 // Transfer Image Data |
| 118 // TODO: move the image data transfer to a separate function - we will need it more often | 91 // TODO: move the image data transfer to a separate function - we will need it more often |
| 119 glBindTexture(GL_TEXTURE_RECTANGLE, node->internal.tex_id); | 92 glBindTexture(GL_TEXTURE_RECTANGLE, node->internal.tex_id); |
| 120 glPixelStorei(GL_UNPACK_ROW_LENGTH, surface->pitch / surface->format->BytesPerPixel); | 93 glPixelStorei(GL_UNPACK_ROW_LENGTH, surface->pitch / surface->format->BytesPerPixel); |
| 124 | 97 |
| 125 // Free the surface | 98 // Free the surface |
| 126 SDL_FreeSurface(surface); | 99 SDL_FreeSurface(surface); |
| 127 } | 100 } |
| 128 | 101 |
| 102 AscText *asc_text(int x, int y, char const *text) { | |
| 103 AscText *node = calloc(1, sizeof(AscText)); | |
| 104 if (node == NULL) { | |
| 105 asc_error("Out of memory."); | |
| 106 return NULL; | |
| 107 } | |
| 108 | |
| 109 node->base.free_func = (asc_scene_free_func) asc_text_free; | |
| 110 node->base.update_func = (asc_scene_update_func) asc_text_update; | |
| 111 node->base.draw_func = (asc_scene_draw_func) asc_text_draw; | |
| 112 | |
| 113 node->position.x = x; | |
| 114 node->position.y = y; | |
| 115 node->font = asc_context.active_font; | |
| 116 node->color = asc_context.ink; | |
| 117 if (text != NULL) { | |
| 118 node->text = strdup(text); | |
| 119 } | |
| 120 | |
| 121 return node; | |
| 122 } | |
| 123 | |
| 129 void asc_text_free(AscText *node) { | 124 void asc_text_free(AscText *node) { |
| 130 asc_dprintf("Release text node texture: %u", node->internal.tex_id); | 125 asc_dprintf("Release text node texture: %u", node->internal.tex_id); |
| 131 glDeleteTextures(1, &node->internal.tex_id); | 126 glDeleteTextures(1, &node->internal.tex_id); |
| 132 free(node->text); | 127 free(node->text); |
| 133 free(node); | 128 free(node); |
