Fixed PSP rendering

src/display/camera.c

@@ -52,6 +52,11 @@ void cameraPushMatrix(camera_t *camera) {
 
   switch(camera->projType) {
     case CAMERA_PROJECTION_TYPE_ORTHOGRAPHIC:
+      assertTrue(
+        camera->orthographic.right != camera->orthographic.left &&
+        camera->orthographic.top != camera->orthographic.bottom,
+        "Invalid orthographic projection parameters"
+      );
       glm_ortho(
         camera->orthographic.left,
         camera->orthographic.right,
@@ -117,7 +122,6 @@ void cameraPushMatrix(camera_t *camera) {
       glm_vec3_copy(camera->lookatPixelPerfect.target, position);
       glm_vec3_add(position, camera->lookatPixelPerfect.offset, position);
       position[2] += z;
-
       glm_lookat(
         position,
         camera->lookatPixelPerfect.target,

src/display/screen.c

@@ -41,6 +41,9 @@ void screenInit() {
       SCREEN.frameBufferMeshVertices
     );
   #endif
+
+  // Init screen to backbuffer mode by default
+  screenBind();
 }
 
 void screenBind() {

src/display/texture.c

@@ -170,6 +170,7 @@ void textureBind(const texture_t *texture) {
   #if DISPLAY_SDL2
     glEnable(GL_TEXTURE_2D);
     glBindTexture(GL_TEXTURE_2D, texture->id);
+    glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
   #endif
   TEXTURE_BOUND = texture;
 }