X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;f=source%2Frender%2Frenderer.cpp;h=58a56ff2f2d105e5213e9b6a6cd837ea68f06e0e;hb=e70662d7812464159f2e47f4bebb69d88f89ae93;hp=3b28d8545b668b75fe2b0d580232dfe96a22e06b;hpb=3930e89d1dab90a27542c3798782216499b3ab44;p=libs%2Fgl.git

diff --git a/source/render/renderer.cpp b/source/render/renderer.cpp
index 3b28d854..58a56ff2 100644
--- a/source/render/renderer.cpp
+++ b/source/render/renderer.cpp
@@ -23,33 +23,43 @@ namespace GL {
 Renderer::Renderer()
 {
 	state_stack.reserve(16);
-	state_stack.push_back(State());
 	shdata_stack.reserve(32);
-	state = &state_stack.back();
-	add_shader_data(standard_shdata);
+	texture_stack.reserve(32);
 }
 
-Renderer::~Renderer()
+void Renderer::begin()
 {
-	end();
+	if(current_state)
+		throw invalid_operation("Renderer::begin");
+
+	state_stack.push_back(State());
+	current_state = &state_stack.back();
+
+	RendererBackend::begin();
+
+	add_shader_data(standard_shdata);
 }
 
 void Renderer::end()
 {
-	if(state_stack.size()>1)
+	if(!current_state || state_stack.size()>1)
 		throw invalid_operation("Renderer::end");
 
-	*state = State();
-	shdata_stack.clear();
-	add_shader_data(standard_shdata);
+	RendererBackend::end();
 
-	commands.use_pipeline(0);
+	current_state = 0;
+	state_stack.clear();
+	texture_stack.clear();
+	shdata_stack.clear();
 }
 
 void Renderer::push_state()
 {
+	if(state_stack.empty())
+		throw invalid_operation("Renderer::push_state");
+
 	state_stack.push_back(state_stack.back());
-	state = &state_stack.back();
+	current_state = &state_stack.back();
 }
 
 void Renderer::pop_state()
@@ -58,81 +68,88 @@ void Renderer::pop_state()
 		throw stack_underflow("Renderer::pop_state");
 
 	state_stack.pop_back();
-	state = &state_stack.back();
+	current_state = &state_stack.back();
 	changed |= MATRIX;
 }
 
+Renderer::State &Renderer::get_state() const
+{
+#ifdef DEBUG
+	if(!current_state)
+		throw invalid_operation("Renderer::get_state");
+#endif
+	return *current_state;
+}
+
 void Renderer::set_camera(const Camera &c)
 {
-	state->camera = &c;
+	get_state().camera = &c;
 	add_shader_data(c.get_shader_data());
 	set_matrix(Matrix());
 }
 
 void Renderer::set_matrix(const Matrix &matrix)
 {
-	state->model_matrix = matrix;
-	changed |= MATRIX;
-}
-
-void Renderer::transform(const Matrix &matrix)
-{
-	state->model_matrix *= matrix;
+	get_state().model_matrix = matrix;
 	changed |= MATRIX;
 }
 
 void Renderer::set_framebuffer(const Framebuffer *f)
 {
-	state->framebuffer = f;
+	get_state().framebuffer = f;
 }
 
 void Renderer::set_viewport(const Rect *v)
 {
-	state->viewport = v;
+	get_state().viewport = v;
 }
 
 void Renderer::set_scissor(const Rect *s)
 {
-	state->scissor = s;
+	get_state().scissor = s;
 }
 
 void Renderer::set_shader_program(const Program *p, const ProgramData *d)
 {
-	state->shprog = p;
+	get_state().shprog = p;
 	if(p && d)
 		add_shader_data(*d);
 }
 
 void Renderer::add_shader_data(const ProgramData &d)
 {
-	if(state->shdata_count<shdata_stack.size())
+	State &state = get_state();
+
+	if(state.shdata_count<shdata_stack.size())
 	{
 		const BoundProgramData &top = shdata_stack.back();
 		if(top.shdata==&d && top.generation==d.get_generation())
 		{
-			++state->shdata_count;
+			++state.shdata_count;
 			return;
 		}
 	}
 
 	flush_shader_data();
 	shdata_stack.push_back(&d);
-	state->shdata_count = shdata_stack.size();
+	state.shdata_count = shdata_stack.size();
 	changed |= SHADER_DATA;
 }
 
 void Renderer::set_texture(Tag tag, const Texture *tex, const Sampler *samp)
 {
+	State &state = get_state();
+
 	if(tex)
 		if(ResourceManager *res_mgr = tex->get_manager())
 			res_mgr->resource_used(*tex);
 
-	if(texture_stack.size()>state->texture_count)
+	if(texture_stack.size()>state.texture_count)
 	{
-		BoundTexture &bt = texture_stack[state->texture_count];
+		BoundTexture &bt = texture_stack[state.texture_count];
 		if(bt.tag==tag && bt.texture==tex && bt.sampler==samp)
 		{
-			++state->texture_count;
+			++state.texture_count;
 			return;
 		}
 		else
@@ -151,64 +168,70 @@ void Renderer::set_texture(Tag tag, const Texture *tex, const Sampler *samp)
 	bound_tex.tag = tag;
 	bound_tex.texture = tex;
 	bound_tex.sampler = samp;
-	state->texture_count = texture_stack.size();
+	state.texture_count = texture_stack.size();
 }
 
 void Renderer::flush_shader_data()
 {
-	if(shdata_stack.size()>state->shdata_count)
-		shdata_stack.erase(shdata_stack.begin()+state->shdata_count, shdata_stack.end());
+	const State &state = get_state();
+
+	if(shdata_stack.size()>state.shdata_count)
+		shdata_stack.erase(shdata_stack.begin()+state.shdata_count, shdata_stack.end());
 }
 
 void Renderer::flush_textures()
 {
-	for(unsigned i=0; i<state->texture_count; ++i)
-		if(texture_stack[i].replaced>=static_cast<int>(state->texture_count))
+	const State &state = get_state();
+
+	for(unsigned i=0; i<state.texture_count; ++i)
+		if(texture_stack[i].replaced>=static_cast<int>(state.texture_count))
 			texture_stack[i].replaced = -1;
 
-	texture_stack.erase(texture_stack.begin()+state->texture_count, texture_stack.end());
+	texture_stack.erase(texture_stack.begin()+state.texture_count, texture_stack.end());
 }
 
 void Renderer::set_vertex_setup(const VertexSetup *vs)
 {
-	state->vertex_setup = vs;
+	get_state().vertex_setup = vs;
 }
 
 void Renderer::set_front_face(FaceWinding winding)
 {
-	state->front_face = winding;
+	get_state().front_face = winding;
 }
 
 void Renderer::set_face_cull(CullMode cull)
 {
-	state->face_cull = cull;
+	get_state().face_cull = cull;
 }
 
 void Renderer::set_depth_test(const DepthTest *dt)
 {
-	state->depth_test = dt;
+	get_state().depth_test = dt;
 }
 
 void Renderer::set_stencil_test(const StencilTest *st)
 {
-	state->stencil_test = st;
+	get_state().stencil_test = st;
 }
 
 void Renderer::set_blend(const Blend *b)
 {
-	state->blend = b;
+	get_state().blend = b;
 }
 
 void Renderer::set_object_lod_bias(unsigned b)
 {
-	state->object_lod_bias = b;
+	get_state().object_lod_bias = b;
 }
 
 void Renderer::clear(const ClearValue *values)
 {
-	pipeline_state.set_framebuffer(state->framebuffer);
-	pipeline_state.set_viewport(state->viewport);
-	pipeline_state.set_scissor(state->scissor);
+	const State &state = get_state();
+
+	pipeline_state.set_framebuffer(state.framebuffer);
+	pipeline_state.set_viewport(state.viewport);
+	pipeline_state.set_scissor(state.scissor);
 	commands.use_pipeline(&pipeline_state);
 	commands.clear(values);
 }
@@ -231,15 +254,17 @@ void Renderer::draw_instanced(const Batch &batch, unsigned count)
 
 void Renderer::resolve_multisample(Framebuffer &target)
 {
-	if(!state->framebuffer)
+	const State &state = get_state();
+
+	if(!state.framebuffer)
 		throw invalid_operation("Renderer::resolve_multisample");
 
-	unsigned width = state->framebuffer->get_width();
-	unsigned height = state->framebuffer->get_height();
+	unsigned width = state.framebuffer->get_width();
+	unsigned height = state.framebuffer->get_height();
 	if(target.get_width()!=width || target.get_height()!=height)
 		throw incompatible_data("Renderer::resolve_multisample");
 
-	pipeline_state.set_framebuffer(state->framebuffer);
+	pipeline_state.set_framebuffer(state.framebuffer);
 	commands.use_pipeline(&pipeline_state);
 	commands.resolve_multisample(target);
 }
@@ -256,20 +281,22 @@ void Renderer::end_query(const QueryPool &pool, unsigned index)
 
 void Renderer::apply_state()
 {
-	if(!state->shprog)
+	const State &state = get_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);
+	pipeline_state.set_framebuffer(state.framebuffer);
+	pipeline_state.set_viewport(state.viewport);
+	pipeline_state.set_scissor(state.scissor);
 
-	bool shprog_changed = (state->shprog!=pipeline_state.get_shader_program());
-	pipeline_state.set_shader_program(state->shprog);
+	bool shprog_changed = (state.shprog!=pipeline_state.get_shader_program());
+	pipeline_state.set_shader_program(state.shprog);
 
 	if(changed&MATRIX)
 	{
-		standard_shdata.uniform("world_obj_matrix", state->model_matrix);
-		LinAl::SquareMatrix<float, 3> nm = state->model_matrix.block<3, 3>(0, 0);
+		standard_shdata.uniform("world_obj_matrix", state.model_matrix);
+		LinAl::SquareMatrix<float, 3> nm = state.model_matrix.block<3, 3>(0, 0);
 		nm = transpose(invert(nm));
 		standard_shdata.uniform("world_obj_normal_matrix", nm);
 		changed &= ~MATRIX;
@@ -278,47 +305,47 @@ void Renderer::apply_state()
 	bool shdata_changed = changed&SHADER_DATA;
 	for(auto i=shdata_stack.begin(); (!shdata_changed && i!=shdata_stack.end()); ++i)
 		shdata_changed = (i->shdata->get_generation()!=i->generation);
-	bool extra_shdata = (shdata_stack.size()>state->shdata_count);
+	bool extra_shdata = (shdata_stack.size()>state.shdata_count);
 
 	if(shdata_changed || shprog_changed || extra_shdata)
 	{
 		if(extra_shdata)
-			shdata_stack.erase(shdata_stack.begin()+state->shdata_count, shdata_stack.end());
+			shdata_stack.erase(shdata_stack.begin()+state.shdata_count, shdata_stack.end());
 		for(const BoundProgramData &d: shdata_stack)
 		{
-			d.shdata->apply(*state->shprog, pipeline_state);
+			d.shdata->apply(*state.shprog, pipeline_state);
 			d.generation = d.shdata->get_generation();
 		}
 		changed &= ~SHADER_DATA;
 	}
 
-	if(state->vertex_setup)
+	if(state.vertex_setup)
 	{
-		if(const VertexArray *array = state->vertex_setup->get_vertex_array())
+		if(const VertexArray *array = state.vertex_setup->get_vertex_array())
 			array->refresh();
-		if(const VertexArray *array = state->vertex_setup->get_instance_array())
+		if(const VertexArray *array = state.vertex_setup->get_instance_array())
 			array->refresh();
 	}
-	pipeline_state.set_vertex_setup(state->vertex_setup);
+	pipeline_state.set_vertex_setup(state.vertex_setup);
 
-	pipeline_state.set_front_face(state->front_face);
-	pipeline_state.set_face_cull(state->face_cull);
+	pipeline_state.set_front_face(state.front_face);
+	pipeline_state.set_face_cull(state.face_cull);
 
-	if(state->texture_count<texture_stack.size())
+	if(state.texture_count<texture_stack.size())
 		flush_textures();
 
 	for(const BoundTexture &t: texture_stack)
 		if(t.texture && t.replaced<0)
 		{
 			if(t.binding<0 || shprog_changed)
-				t.binding = state->shprog->get_uniform_binding(t.tag);
+				t.binding = state.shprog->get_uniform_binding(t.tag);
 			if(t.binding>=0)
 				pipeline_state.set_texture(t.binding, t.texture, t.sampler);
 		}
 
-	pipeline_state.set_depth_test(state->depth_test);
-	pipeline_state.set_stencil_test(state->stencil_test);
-	pipeline_state.set_blend(state->blend);
+	pipeline_state.set_depth_test(state.depth_test);
+	pipeline_state.set_stencil_test(state.stencil_test);
+	pipeline_state.set_blend(state.blend);
 }