X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;f=source%2Frender%2Frenderer.cpp;h=0c5bf77454ed25c32151f2a44ed189723234a192;hb=016f0f0dd51511f98d0bf398d99199d7dec1543c;hp=d3124f0da334c7439e630266db0eef7c8c4654cf;hpb=6d2e2a0bb28496a8c25b441009bdd2a1a1e72d81;p=libs%2Fgl.git

diff --git a/source/render/renderer.cpp b/source/render/renderer.cpp
index d3124f0d..0c5bf774 100644
--- a/source/render/renderer.cpp
+++ b/source/render/renderer.cpp
@@ -10,6 +10,7 @@
 #include "renderable.h"
 #include "renderer.h"
 #include "resourcemanager.h"
+#include "resources.h"
 #include "sampler.h"
 #include "texture.h"
 #include "vertexarray.h"
@@ -20,7 +21,8 @@ using namespace std;
 namespace Msp {
 namespace GL {
 
-Renderer::Renderer()
+Renderer::Renderer():
+	placeholder_texture(Resources::get_global().get<Texture>("_placeholder.png"))
 {
 	state_stack.reserve(16);
 	shdata_stack.reserve(32);
@@ -148,8 +150,12 @@ void Renderer::set_texture(Tag tag, const Texture *tex, int level, const Sampler
 	State &state = get_state();
 
 	if(tex)
+	{
 		if(ResourceManager *res_mgr = tex->get_manager())
 			res_mgr->resource_used(*tex);
+		if(!tex->is_loaded())
+			tex = &placeholder_texture;
+	}
 
 	if(texture_stack.size()>state.texture_count)
 	{
@@ -235,11 +241,7 @@ void Renderer::set_object_lod_bias(unsigned b)
 
 void Renderer::clear(const ClearValue *values)
 {
-	const State &state = get_state();
-
-	pipeline_state.set_framebuffer(state.framebuffer);
-	pipeline_state.set_viewport(state.viewport);
-	pipeline_state.set_scissor(state.scissor);
+	apply_framebuffer();
 	commands.use_pipeline(&pipeline_state);
 	commands.clear(values);
 }
@@ -289,6 +291,16 @@ void Renderer::end_query(const QueryPool &pool, unsigned index)
 	commands.end_query(pool, index);
 }
 
+void Renderer::apply_framebuffer()
+{
+	const State &state = get_state();
+
+	pipeline_state.set_framebuffer(state.framebuffer);
+	static const Rect default_rect = Rect::max();
+	pipeline_state.set_viewport(state.viewport ? *state.viewport : default_rect);
+	pipeline_state.set_scissor(state.scissor ? *state.scissor : default_rect);
+}
+
 void Renderer::apply_state()
 {
 	const State &state = get_state();
@@ -296,9 +308,7 @@ void Renderer::apply_state()
 	if(!state.shprog)
 		throw invalid_operation("Renderer::apply_state");
 
-	pipeline_state.set_framebuffer(state.framebuffer);
-	pipeline_state.set_viewport(state.viewport);
-	pipeline_state.set_scissor(state.scissor);
+	apply_framebuffer();
 
 	bool shprog_changed = (state.shprog!=pipeline_state.get_shader_program());
 	pipeline_state.set_shader_program(state.shprog);
@@ -353,9 +363,12 @@ void Renderer::apply_state()
 				pipeline_state.set_texture(t.binding, t.texture, t.level, t.sampler);
 		}
 
-	pipeline_state.set_depth_test(state.depth_test);
-	pipeline_state.set_stencil_test(state.stencil_test);
-	pipeline_state.set_blend(state.blend);
+	static const DepthTest default_depth_test;
+	pipeline_state.set_depth_test(state.depth_test ? *state.depth_test : default_depth_test);
+	static const StencilTest default_stencil_test;
+	pipeline_state.set_stencil_test(state.stencil_test ? *state.stencil_test : default_stencil_test);
+	static const Blend default_blend;
+	pipeline_state.set_blend(state.blend ? *state.blend : default_blend);
 }