Vertices: fix alpha blending when window background is transparent, add uniform for color

2 files changed, 10 insertions, 0 deletions

diff --git a/src/graphics/shader.c b/src/graphics/shader.c
index f7f5545..f362490 100644
--- a/src/graphics/shader.c
+++ b/src/graphics/shader.c
@@ -231,6 +231,11 @@ int mgl_shader_program_set_uniform_vec4f(mgl_shader_program *self, const char *u
     return 0;
 }
 
+int mgl_shader_program_set_uniform_color(mgl_shader_program *self, const char *uniform_name, mgl_color color) {
+    return mgl_shader_program_set_uniform_vec4f(self, uniform_name,
+        (mgl_vec4f){ color.r / 255.0f, color.g / 255.0f, color.b / 255.0f, color.a / 255.0f });
+}
+
 /* TODO: Optimize glUseProgram */
 void mgl_shader_program_use(mgl_shader_program *shader_program) {
     mgl_context *context = mgl_get_context();
diff --git a/src/graphics/vertex.c b/src/graphics/vertex.c
index e55c180..92a6e93 100644
--- a/src/graphics/vertex.c
+++ b/src/graphics/vertex.c
@@ -1,11 +1,14 @@
 #include "../../include/mgl/graphics/vertex.h"
 #include "../../include/mgl/graphics/texture.h"
+#include "../../include/mgl/window/window.h"
 #include "../../include/mgl/mgl.h"
 
 void mgl_vertices_draw(mgl_context *context, const mgl_vertex *vertices, size_t vertex_count, mgl_primitive_type primitive_type, mgl_vec2f position) {
     if(vertex_count == 0)
         return;
 
+    mgl_window_set_texture_blend_func(context->current_window);
+
     context->gl.glPushMatrix();
 
     if(!mgl_texture_current_texture()) {
@@ -22,4 +25,6 @@ void mgl_vertices_draw(mgl_context *context, const mgl_vertex *vertices, size_t
     context->gl.glDrawArrays(mgl_primitive_type_to_gl_mode(primitive_type), 0, vertex_count);
 
     context->gl.glPopMatrix();
+
+    mgl_window_set_render_blend_func(context->current_window);
 }