Allow color modulation of sprites, refactor renderer init

data/shaders/sprite.frag.glsl

@@ -4,8 +4,9 @@ in vec2 texCoord;
 out vec4 color;
 
 uniform sampler2D tex;
+uniform vec4 spriteColor;
 
 void main()
 {
-	color = texture(tex, texCoord);
+	color = spriteColor * texture(tex, texCoord);
 }

src/Renderer.c

@@ -21,7 +21,7 @@ INTERNAL void updateBufferObject(Renderer *const renderer,
 
 void renderer_string(Renderer *const renderer, Font *const font,
                      const char *const string, v2 pos, f32 rotate,
-                     v3 color)
+                     v4 color)
 {
 	i32 quadIndex = 0;
 	i32 strLen = common_strlen(string);
@@ -74,14 +74,14 @@ void renderer_debugString(Renderer *const renderer, Font *const font,
 	}
 
 	f32 rotate = 0;
-	v3 color = V3(0, 0, 0);
+	v4 color = V4(0, 0, 0, 1);
 	renderer_string(renderer, font, string, debugRenderer.stringPos, rotate,
 	                color);
 	debugRenderer.stringPos.y -= (0.9f * asset_getVFontSpacing(font->metrics));
 }
 
 void renderer_entity(Renderer *renderer, v4 cameraBounds, Entity *entity, f32 dt, f32 rotate,
-                     v3 color)
+                     v4 color)
 {
 	// TODO(doyle): Batch into render groups
 
@@ -124,7 +124,7 @@ void renderer_entity(Renderer *renderer, v4 cameraBounds, Entity *entity, f32 dt
 
 }
 
-void renderer_object(Renderer *renderer, v2 pos, v2 size, f32 rotate, v3 color,
+void renderer_object(Renderer *renderer, v2 pos, v2 size, f32 rotate, v4 color,
                      Texture *tex)
 {
 	shader_use(renderer->shader);
@@ -138,12 +138,10 @@ void renderer_object(Renderer *renderer, v2 pos, v2 size, f32 rotate, v3 color,
 	mat4 scaleMatrix = mat4_scale(size.x, size.y, 1.0f);
 
 	mat4 model = mat4_mul(transMatrix, mat4_mul(rotateMatrix, scaleMatrix));
-	//mat4 model = mat4_mul(transMatrix, rotateMatrix);
 	shader_uniformSetMat4fv(renderer->shader, "model", model);
 	glCheckError();
 
-	// TODO(doyle): Unimplemented
-	// this->shader->uniformSetVec3f("spriteColor", color);
+	shader_uniformSetVec4f(renderer->shader, "spriteColor", color);
 
 #if RENDER_BOUNDING_BOX
 	glBindVertexArray(renderer->vao);

src/Shader.c

@@ -38,4 +38,12 @@ void shader_uniformSetMat4fv(Shader *const shader, const GLchar *name,
 	glUniformMatrix4fv(uniformLoc, 1, GL_FALSE, data.e[0]);
 }
 
+void shader_uniformSetVec4f(Shader *const shader, const GLchar *name,
+                            v4 data)
+{
+	GLint uniformLoc = glGetUniformLocation(shader->id, name);
+	glUniform4f(uniformLoc, data.e[0], data.e[1], data.e[2], data.e[3]);
+}
+
+
 void shader_use(const Shader *const shader) { glUseProgram(shader->id); }

src/WorldTraveller.c

@@ -48,34 +48,9 @@ INTERNAL void addAnim(Entity *entity, v4 *rects, i32 numRects, f32 duration)
 	entity->anim[entity->freeAnimIndex++] = result;
 }
 
-void worldTraveller_gameInit(GameState *state, v2i windowSize)
+INTERNAL void rendererInit(GameState *state, v2i windowSize)
 {
 	AssetManager *assetManager = &state->assetManager;
-	/* Initialise assets */
-	asset_loadTextureImage(assetManager,
-	                       "data/textures/WorldTraveller/TerraSprite1024.png",
-	                       texlist_hero);
-
-	asset_loadTextureImage(assetManager,
-	                       "data/textures/WorldTraveller/Terrain.png",
-	                       texlist_terrain);
-	TexAtlas *terrainAtlas =
-	    asset_getTextureAtlas(assetManager, texlist_terrain);
-	f32 atlasTileSize = 128.0f;
-	terrainAtlas->texRect[terraincoords_ground] =
-	    V4(384.0f, 512.0f, 384.0f + atlasTileSize, 512.0f + atlasTileSize);
-
-	asset_loadShaderFiles(assetManager, "data/shaders/sprite.vert.glsl",
-	                      "data/shaders/sprite.frag.glsl", shaderlist_sprite);
-
-	asset_loadTTFont(assetManager, "C:/Windows/Fonts/Arialbd.ttf");
-	glCheckError();
-
-	state->state          = state_active;
-	state->currWorldIndex = 0;
-	state->tileSize       = 64;
-
-	/* Init renderer */
 	Renderer *renderer         = &state->renderer;
 	renderer->size = V2(CAST(f32) windowSize.x, CAST(f32) windowSize.y);
 	// NOTE(doyle): Value to map a screen coordinate to NDC coordinate
@@ -111,6 +86,38 @@ void worldTraveller_gameInit(GameState *state, v2i windowSize)
 	glBindVertexArray(0);
 	glCheckError();
 
+}
+
+void worldTraveller_gameInit(GameState *state, v2i windowSize)
+{
+	AssetManager *assetManager = &state->assetManager;
+	/* Initialise assets */
+	asset_loadTextureImage(assetManager,
+	                       "data/textures/WorldTraveller/TerraSprite1024.png",
+	                       texlist_hero);
+
+	asset_loadTextureImage(assetManager,
+	                       "data/textures/WorldTraveller/Terrain.png",
+	                       texlist_terrain);
+	TexAtlas *terrainAtlas =
+	    asset_getTextureAtlas(assetManager, texlist_terrain);
+	f32 atlasTileSize = 128.0f;
+	terrainAtlas->texRect[terraincoords_ground] =
+	    V4(384.0f, 512.0f, 384.0f + atlasTileSize, 512.0f + atlasTileSize);
+
+	asset_loadShaderFiles(assetManager, "data/shaders/sprite.vert.glsl",
+	                      "data/shaders/sprite.frag.glsl", shaderlist_sprite);
+
+	asset_loadTTFont(assetManager, "C:/Windows/Fonts/Arialbd.ttf");
+	glCheckError();
+
+	state->state          = state_active;
+	state->currWorldIndex = 0;
+	state->tileSize       = 64;
+
+	/* Init renderer */
+	rendererInit(state, windowSize);
+
 	/* Init world */
 	const i32 targetWorldWidth  = 500 * METERS_TO_PIXEL;
 	const i32 targetWorldHeight = 15 * METERS_TO_PIXEL;
@@ -167,6 +174,7 @@ void worldTraveller_gameInit(GameState *state, v2i windowSize)
 	/* Init hero entity */
 	world->heroIndex   = world->freeEntityIndex;
 
+	Renderer *renderer = &state->renderer;
 	v2 size              = V2(58.0f, 98.0f);
 	v2 pos               = V2(((renderer->size.w * 0.5f) - (size.w * 0.5f)),
 	                          CAST(f32) state->tileSize);
@@ -401,7 +409,7 @@ void worldTraveller_gameUpdateAndRender(GameState *state, const f32 dt)
 	{
 		Entity *const entity = &world->entities[i];
 		renderer_entity(&state->renderer, cameraBounds, entity, dt, 0.0f,
-		                V3(0, 0, 0));
+		                V4(1, 1, 1, 1));
 	}
 
 	// TODO(doyle): Clean up lines

src/include/Dengine/Renderer.h

@@ -35,15 +35,15 @@ void renderer_backgroundTiles(Renderer *const renderer, const v2 tileSize,
 #endif
 
 void renderer_string(Renderer *const renderer, Font *const font,
-                     const char *const string, v2 pos, f32 rotate, v3 color);
+                     const char *const string, v2 pos, f32 rotate, v4 color);
 
 void renderer_debugString(Renderer *const renderer, Font *const font,
                           const char *const string);
 
 void renderer_entity(Renderer *renderer, v4 cameraBounds, Entity *entity,
-                     f32 dt, f32 rotate, v3 color);
+                     f32 dt, f32 rotate, v4 color);
 
-void renderer_object(Renderer *renderer, v2 pos, v2 size, f32 rotate, v3 color,
+void renderer_object(Renderer *renderer, v2 pos, v2 size, f32 rotate, v4 color,
                      Texture *tex);
 
 RenderQuad renderer_createQuad(Renderer *renderer, v4 quadRect, v4 texRect,

src/include/Dengine/Shader.h

@@ -17,6 +17,8 @@ void shader_uniformSet1i(Shader *const shader, const GLchar *name,
                          const GLuint data);
 void shader_uniformSetMat4fv(Shader *const shader, const GLchar *name,
                              mat4 data);
+void shader_uniformSetVec4f(Shader *const shader, const GLchar *name,
+                            v4 data);
 
 void shader_use(const Shader *const shader);