X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;f=source%2Frender%2Frenderer.cpp;h=50d3887369a30cbcdf6b8b1f99e83ea33ca08a94;hb=94cadd1618f93239b1cb0acbd4f958257c035c98;hp=416a0fc89ced4827147982f234ca009fb94576c0;hpb=7aaec9a70b8d7733429bec043f8e33e02956f266;p=libs%2Fgl.git

diff --git a/source/render/renderer.cpp b/source/render/renderer.cpp
index 416a0fc8..50d38873 100644
--- a/source/render/renderer.cpp
+++ b/source/render/renderer.cpp
@@ -1,373 +1,446 @@
 #include "batch.h"
 #include "buffer.h"
 #include "camera.h"
-#include "clipping.h"
 #include "error.h"
+#include "framebuffer.h"
 #include "lighting.h"
 #include "material.h"
 #include "program.h"
 #include "programdata.h"
 #include "renderable.h"
 #include "renderer.h"
+#include "resourcemanager.h"
+#include "resources.h"
 #include "sampler.h"
 #include "texture.h"
-#include "texturing.h"
-#include "texunit.h"
 #include "vertexarray.h"
 #include "vertexsetup.h"
-#include "windingtest.h"
 
 using namespace std;
 
 namespace Msp {
 namespace GL {
 
+const Tag Renderer::world_obj_matrix_tag("world_obj_matrix");
+const Tag Renderer::world_obj_normal_matrix_tag("world_obj_normal_matrix");
+
 Renderer::Renderer():
-	default_camera(0)
+	placeholder_texture(Resources::get_global().get<Texture>("_placeholder.png")),
+	default_sampler(Resources::get_global().get<Sampler>("_linear_clamp.samp"))
 {
-	init();
+	state_stack.reserve(16);
+	shdata_stack.reserve(32);
+	texture_stack.reserve(32);
 }
 
-Renderer::Renderer(const Camera *c):
-	default_camera(c)
+void Renderer::begin()
 {
-	init();
+	if(current_state)
+		throw invalid_operation("Renderer::begin");
+
+	++frame_index;
+	state_stack.emplace_back();
+	current_state = &state_stack.back();
+
+	RendererBackend::begin();
 
-	if(c)
-		set_camera(*c);
+	commands.begin_frame(frame_index);
 }
 
-void Renderer::init()
+void Renderer::end()
 {
-	state_stack.reserve(16);
-	state_stack.push_back(State());
-	shdata_stack.reserve(32);
-	state = &state_stack.back();
+	if(!current_state || state_stack.size()>1)
+		throw invalid_operation("Renderer::end");
+
+	RendererBackend::end();
 
-	standard_shdata.uniform("projection_matrix", Matrix());
-	standard_shdata.uniform("eye_world_matrix", Matrix());
+	current_state = 0;
+	state_stack.clear();
+	texture_stack.clear();
+	shdata_stack.clear();
 }
 
-Renderer::~Renderer()
+void Renderer::push_state()
 {
-	end();
+	if(state_stack.empty())
+		throw invalid_operation("Renderer::push_state");
+
+	state_stack.push_back(state_stack.back());
+	current_state = &state_stack.back();
 }
 
-void Renderer::set_camera(const Camera &c)
+void Renderer::pop_state()
 {
-	state->camera = &c;
-	standard_shdata.uniform("projection_matrix", state->camera->get_projection_matrix());
-	standard_shdata.uniform("eye_world_matrix", state->camera->get_view_matrix());
-	changed |= STANDARD_SHDATA;
-	set_matrix(state->camera->get_view_matrix());
+	if(state_stack.size()==1)
+		throw stack_underflow("Renderer::pop_state");
+
+	uintptr_t old_pipeline = current_state->pipeline_key;
+
+	state_stack.pop_back();
+	current_state = &state_stack.back();
+	changed |= MATRIX;
+
+	if(current_state->pipeline_key!=old_pipeline)
+		changed |= PIPELINE_KEY;
 }
 
-void Renderer::set_matrix(const Matrix &matrix)
+Renderer::State &Renderer::get_state() const
 {
-	state->modelview_matrix = matrix;
-	changed |= MATRIX;
+#ifdef DEBUG
+	if(!current_state)
+		throw invalid_operation("Renderer::get_state");
+#endif
+	return *current_state;
+}
+
+void Renderer::set_pipeline_key(uintptr_t key)
+{
+	State &state = get_state();
+	if(key!=state.pipeline_key)
+	{
+		state.pipeline_key = key;
+		changed |= PIPELINE_KEY;
+	}
 }
 
-void Renderer::transform(const Matrix &matrix)
+void Renderer::set_camera(const Camera &c)
 {
-	state->modelview_matrix *= matrix;
+	get_state().camera = &c;
+	set_matrix(Matrix());
+}
+
+void Renderer::set_matrix(const Matrix &matrix)
+{
+	get_state().model_matrix = matrix;
 	changed |= MATRIX;
 }
 
-void Renderer::set_texture(const Texture *t, const Sampler *s)
+void Renderer::set_framebuffer(const Framebuffer *f)
 {
-	state->texture = t;
-	state->sampler = s;
-	state->texturing = 0;
+	get_state().framebuffer = f;
 }
 
-void Renderer::set_texturing(const Texturing *t)
+void Renderer::set_viewport(const Rect *v)
 {
-	state->texturing = t;
-	state->texture = 0;
-	state->sampler = 0;
+	get_state().viewport = v;
 }
 
-unsigned Renderer::allocate_effect_texunit()
+void Renderer::set_scissor(const Rect *s)
 {
-	return --state->lowest_effect_texunit;
+	get_state().scissor = s;
 }
 
-void Renderer::set_material(const Material *m)
+void Renderer::set_shader_program(const Program *p, const ProgramData *d)
 {
-	state->material = m;
-	changed |= MATERIAL_SHDATA;
+	get_state().shprog = p;
+	if(p && d)
+		add_shader_data(*d);
 }
 
-void Renderer::set_lighting(const Lighting *l)
+void Renderer::add_shader_data(const ProgramData &d)
 {
-	state->lighting = l;
-	state->lighting_matrix = state->modelview_matrix;
-	if(l)
+	State &state = get_state();
+
+	if(state.shdata_count<shdata_stack.size())
 	{
-		l->update_shader_data(standard_shdata, state->lighting_matrix);
-		changed |= STANDARD_SHDATA;
+		const BoundProgramData &top = shdata_stack.back();
+		if(top.shdata==&d && top.generation==d.get_generation())
+		{
+			++state.shdata_count;
+			return;
+		}
 	}
+
+	flush_shader_data();
+	shdata_stack.push_back(&d);
+	state.shdata_count = shdata_stack.size();
+	changed |= SHADER_DATA;
+}
+
+void Renderer::set_texture(Tag tag, const Texture *tex, const Sampler *samp)
+{
+	set_texture(tag, tex, -1, samp);
 }
 
-void Renderer::set_clipping(const Clipping *c)
+void Renderer::set_texture(Tag tag, const Texture *tex, int level, const Sampler *samp)
 {
-	state->clipping = c;
-	state->clipping_matrix = state->modelview_matrix;
-	if(c)
+	State &state = get_state();
+
+	if(tex)
 	{
-		c->update_shader_data(standard_shdata, state->clipping_matrix);
-		changed |= STANDARD_SHDATA;
+		if(ResourceManager *res_mgr = tex->get_manager())
+			res_mgr->resource_used(*tex);
+		if(!tex->is_loaded())
+			tex = &placeholder_texture;
+		if(!samp)
+			samp = &default_sampler;
 	}
+	else
+		samp = 0;
+
+	set_resource(texture_stack, state.texture_count, tag, { tex, samp, level });
 }
 
-void Renderer::set_shader_program(const Program *p, const ProgramData *d)
+void Renderer::set_storage_texture(Tag tag, const Texture *tex)
 {
-	state->shprog = p;
-	if(p && d)
-		add_shader_data(*d);
+	State &state = get_state();
+	set_resource(texture_stack, state.texture_count, tag, { tex, 0, 0 });
 }
 
-void Renderer::add_shader_data(const ProgramData &d)
+template<typename T>
+void Renderer::set_resource(vector<BoundResource<T>> &stack, unsigned &count, Tag tag, const T &res)
 {
-	if(state->shdata_count<shdata_stack.size() && shdata_stack[state->shdata_count]==&d)
-		++state->shdata_count;
-	else
+	if(stack.size()>count)
 	{
-		flush_shader_data();
-		shdata_stack.push_back(&d);
-		state->shdata_count = shdata_stack.size();
-		changed |= SHADER_DATA;
+		BoundResource<T> &top = stack[count];
+		if(top.tag==tag && top.resource==res)
+		{
+			++count;
+			return;
+		}
+		else
+			flush_resources(stack, count);
 	}
+
+	for(auto i=stack.end(); i!=stack.begin(); )
+		if((--i)->tag==tag)
+		{
+			i->replaced = stack.size();
+			break;
+		}
+
+	stack.emplace_back();
+	BoundResource<T> &bound_res = stack.back();
+	bound_res.tag = tag;
+	bound_res.resource = res;
+	count = 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());
+}
+
+template<typename T>
+void Renderer::flush_resources(vector<BoundResource<T>> &stack, unsigned &count)
+{
+	for(unsigned i=0; i<count; ++i)
+		if(stack[i].replaced>=static_cast<int>(count))
+			stack[i].replaced = -1;
+
+	stack.erase(stack.begin()+count, stack.end());
 }
 
 void Renderer::set_vertex_setup(const VertexSetup *vs)
 {
-	state->vertex_setup = vs;
+	get_state().vertex_setup = vs;
 }
 
-void Renderer::set_winding_test(const WindingTest *w)
+void Renderer::set_front_face(FaceWinding winding)
 {
-	state->winding_test = w;
+	get_state().front_face = winding;
 }
 
-void Renderer::set_reverse_winding(bool r)
+void Renderer::set_face_cull(CullMode cull)
 {
-	state->reverse_winding = r;
+	get_state().face_cull = cull;
 }
 
-void Renderer::set_object_lod_bias(unsigned b)
+void Renderer::set_depth_test(const DepthTest *dt)
 {
-	state->object_lod_bias = b;
+	get_state().depth_test = dt;
 }
 
-void Renderer::push_state()
+void Renderer::set_stencil_test(const StencilTest *st)
 {
-	state_stack.push_back(state_stack.back());
-	state = &state_stack.back();
+	get_state().stencil_test = st;
 }
 
-void Renderer::pop_state()
+void Renderer::set_blend(const Blend *b)
 {
-	if(state_stack.size()==1)
-		throw stack_underflow("Renderer::pop_state");
+	get_state().blend = b;
+}
 
-	const Camera *old_camera = state->camera;
-	const Lighting *old_lighting = state->lighting;
-	const Clipping *old_clipping = state->clipping;
-	state_stack.pop_back();
-	state = &state_stack.back();
-	changed |= MATRIX;
-	bool camera_changed = (state->camera!=old_camera);
-	if(camera_changed)
-	{
-		if(state->camera)
-		{
-			standard_shdata.uniform("projection_matrix", state->camera->get_projection_matrix());
-			standard_shdata.uniform("eye_world_matrix", state->camera->get_view_matrix());
-		}
-		else
-		{
-			standard_shdata.uniform("projection_matrix", Matrix());
-			standard_shdata.uniform("eye_world_matrix", Matrix());
-		}
-		changed |= STANDARD_SHDATA;
-	}
-	/* This actually should compare the relevant matrices rather than check for
-	camera, but in practice lighting and clipping is set right after the camera
-	and a boolean check is much faster than matrix comparison. */
-	if(state->lighting!=old_lighting || camera_changed)
-	{
-		if(state->lighting)
-		{
-			state->lighting->update_shader_data(standard_shdata, state->lighting_matrix);
-			changed |= STANDARD_SHDATA;
-		}
-	}
-	if(state->clipping!=old_clipping || camera_changed)
-	{
-		if(state->clipping)
-		{
-			state->clipping->update_shader_data(standard_shdata, state->clipping_matrix);
-			changed |= STANDARD_SHDATA;
-		}
-	}
+void Renderer::set_object_lod_bias(unsigned b)
+{
+	get_state().object_lod_bias = b;
 }
 
-void Renderer::end()
+void Renderer::clear(const ClearValue *values)
 {
-	if(state_stack.size()>1)
-		throw invalid_operation("Renderer::end");
+	apply_framebuffer();
+	commands.use_pipeline(&get_pipeline_state());
+	commands.clear(values);
+}
 
-	*state = State();
-	if(default_camera)
-		set_camera(*default_camera);
-	else
-		standard_shdata.uniform("projection_matrix", Matrix());
-	shdata_stack.clear();
-	excluded.clear();
+void Renderer::draw(const Batch &batch)
+{
+	apply_state();
+	batch.refresh(frame_index);
+	PipelineState &ps = get_pipeline_state();
+	ps.set_primitive_type(batch.get_type());
+	commands.use_pipeline(&ps);
+	commands.draw(batch);
+}
 
-	Texturing::unbind();
-	Texture::unbind_from(0);
-	Clipping::unbind();
-	Program::unbind();
-	VertexSetup::unbind();
-	Buffer::unbind_from(ELEMENT_ARRAY_BUFFER);
-	WindingTest::unbind();
+void Renderer::draw_instanced(const Batch &batch, unsigned count)
+{
+	apply_state();
+	batch.refresh(frame_index);
+	PipelineState &ps = get_pipeline_state();
+	ps.set_primitive_type(batch.get_type());
+	commands.use_pipeline(&ps);
+	commands.draw_instanced(batch, count);
 }
 
-void Renderer::exclude(const Renderable &renderable)
+void Renderer::dispatch(unsigned count_x, unsigned count_y, unsigned count_z)
 {
-	excluded.insert(&renderable);
+	apply_state();
+	PipelineState &ps = get_pipeline_state();
+	commands.use_pipeline(&ps);
+	commands.dispatch(count_x, count_y, count_z);
 }
 
-void Renderer::include(const Renderable &renderable)
+void Renderer::resolve_multisample()
 {
-	excluded.erase(&renderable);
+	const State &state = get_state();
+
+	if(!state.framebuffer)
+		throw invalid_operation("Renderer::resolve_multisample");
+
+	apply_framebuffer();
+	commands.use_pipeline(&get_pipeline_state());
+	commands.resolve_multisample();
 }
 
-void Renderer::render(const Renderable &renderable, const Tag &tag)
+void Renderer::begin_query(const QueryPool &pool, unsigned index)
 {
-	if(!excluded.count(&renderable))
-		renderable.render(*this, tag);
+	commands.begin_query(pool, index);
 }
 
-void Renderer::draw(const Batch &batch)
+void Renderer::end_query(const QueryPool &pool, unsigned index)
 {
-	apply_state();
+	commands.end_query(pool, index);
+}
 
-	batch.draw();
+PipelineState &Renderer::get_pipeline_state()
+{
+	if(changed&PIPELINE_KEY)
+	{
+		RendererBackend::set_pipeline_key(current_state->pipeline_key);
+		changed &= ~PIPELINE_KEY;
+	}
+
+	return RendererBackend::get_pipeline_state();
 }
 
-void Renderer::draw_instanced(const Batch &batch, unsigned count)
+void Renderer::apply_framebuffer()
 {
-	apply_state();
+	const State &state = get_state();
+
+	PipelineState &ps = get_pipeline_state();
 
-	batch.draw_instanced(count);
+	ps.set_framebuffer(state.framebuffer);
+	static const Rect default_rect = Rect::max();
+	ps.set_viewport(state.viewport ? *state.viewport : default_rect);
+	ps.set_scissor(state.scissor ? *state.scissor : default_rect);
 }
 
 void Renderer::apply_state()
 {
-	if(!state->shprog)
+	State &state = get_state();
+
+	if(!state.shprog)
 		throw invalid_operation("Renderer::apply_state");
 
-	/* We (mostly) let the objects themselves figure out if the binding has
-	changed */
+	apply_framebuffer();
 
-	if(state->texturing)
-		state->texturing->bind();
-	else
-	{
-		Texturing::unbind();
-		if(state->texture)
-		{
-			if(state->sampler)
-				state->sampler->bind_to(0);
-			else
-				Sampler::unbind_from(0);
-			state->texture->bind_to(0);
-		}
-		else
-			Texture::unbind_from(0);
-	}
+	PipelineState &ps = get_pipeline_state();
+	bool pipeline_changed = (&ps!=last_pipeline);
+	last_pipeline = &ps;
 
-	if(state->clipping)
-		state->clipping->bind();
-	else
-		Clipping::unbind();
+	bool shprog_changed = (state.shprog!=ps.get_shader_program());
+	ps.set_shader_program(state.shprog);
+
+	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 shprog_changed = (state->shprog!=Program::current());
-	state->shprog->bind();
+	if(changed&CAMERA)
+	{
+		shdata_changed = true;
+		changed &= ~CAMERA;
+	}
 
 	if(changed&MATRIX)
 	{
-		standard_shdata.uniform("eye_obj_matrix", state->modelview_matrix);
-		LinAl::SquareMatrix<float, 3> nm = state->modelview_matrix.block<3, 3>(0, 0);
+		standard_shdata.uniform(world_obj_matrix_tag, state.model_matrix);
+		LinAl::Matrix<float, 3, 3> nm = state.model_matrix.block<3, 3>(0, 0);
 		nm = transpose(invert(nm));
-		standard_shdata.uniform_matrix3("eye_obj_normal_matrix", &nm(0, 0));
-		changed = (changed&~MATRIX)|STANDARD_SHDATA;
+		standard_shdata.uniform(world_obj_normal_matrix_tag, nm);
+		changed &= ~MATRIX;
+		shdata_changed = true;
 	}
 
-	if(state->material && ((changed&MATERIAL_SHDATA) || shprog_changed))
+	if(shdata_changed || shprog_changed || pipeline_changed || extra_shdata)
 	{
-		state->material->get_shader_data().apply();
-		changed &= ~MATERIAL_SHDATA;
+		if(extra_shdata)
+			shdata_stack.erase(shdata_stack.begin()+state.shdata_count, shdata_stack.end());
+		standard_shdata.apply(*state.shprog, ps, frame_index);
+		if(state.camera)
+			state.camera->get_shader_data().apply(*state.shprog, ps, frame_index);
+		for(const BoundProgramData &d: shdata_stack)
+		{
+			d.shdata->apply(*state.shprog, ps, frame_index);
+			d.generation = d.shdata->get_generation();
+		}
+		changed &= ~SHADER_DATA;
 	}
 
-	if((changed&STANDARD_SHDATA) || shprog_changed)
+	if(state.vertex_setup)
 	{
-		standard_shdata.apply();
-		changed &= ~STANDARD_SHDATA;
+		if(const VertexArray *array = state.vertex_setup->get_vertex_array())
+			array->refresh(frame_index);
+		if(const VertexArray *array = state.vertex_setup->get_instance_array())
+			array->refresh(frame_index);
 	}
+	ps.set_vertex_setup(state.vertex_setup);
 
-	bool extra_shdata = (shdata_stack.size()>state->shdata_count);
+	ps.set_front_face(state.front_face);
+	ps.set_face_cull(state.face_cull);
 
-	if((changed&SHADER_DATA) || shprog_changed || extra_shdata)
-	{
-		if(extra_shdata)
-			shdata_stack.erase(shdata_stack.begin()+state->shdata_count, shdata_stack.end());
-		for(vector<const ProgramData *>::const_iterator i=shdata_stack.begin(); i!=shdata_stack.end(); ++i)
-			(*i)->apply();
-		changed &= ~SHADER_DATA;
-	}
+	if(state.texture_count<texture_stack.size())
+		flush_resources(texture_stack, state.texture_count);
 
-	if(state->vertex_setup)
-		state->vertex_setup->bind();
-	else
-		VertexSetup::unbind();
+	for(const BoundResource<SampledTexture> &t: texture_stack)
+		if(t.resource.texture && t.replaced<0)
+		{
+			if(t.binding<0 || shprog_changed)
+				t.binding = state.shprog->get_uniform_binding(t.tag);
+			if(t.binding>=0)
+			{
+				if(t.resource.sampler)
+					ps.set_texture(t.binding, t.resource.texture, t.resource.level, t.resource.sampler);
+				else
+					ps.set_storage_texture(t.binding, t.resource.texture);
+			}
+		}
 
-	if(state->winding_test)
-	{
-		if(state->reverse_winding)
-			state->winding_test->get_reverse().bind();
-		else
-			state->winding_test->bind();
-	}
-	else
-		WindingTest::unbind();
-}
-
-
-Renderer::State::State():
-	camera(0),
-	texture(0),
-	texturing(0),
-	lowest_effect_texunit(TexUnit::get_n_units()),
-	material(0),
-	lighting(0),
-	clipping(0),
-	shprog(0),
-	shdata_count(0),
-	vertex_setup(0),
-	winding_test(0),
-	reverse_winding(false),
-	object_lod_bias(0)
+	static const DepthTest default_depth_test;
+	ps.set_depth_test(state.depth_test ? *state.depth_test : default_depth_test);
+	static const StencilTest default_stencil_test;
+	ps.set_stencil_test(state.stencil_test ? *state.stencil_test : default_stencil_test);
+	static const Blend default_blend;
+	ps.set_blend(state.blend ? *state.blend : default_blend);
+}
+
+
+Renderer::BoundProgramData::BoundProgramData(const ProgramData *d):
+	shdata(d)
 { }
 
 } // namespace GL