X-Git-Url: http://git.tdb.fi/?p=libs%2Fgl.git;a=blobdiff_plain;f=source%2Frenderer.cpp;h=416a0fc89ced4827147982f234ca009fb94576c0;hp=01c17a26ef8cc3ce5019bea833a3224e7c54e19c;hb=bec07999d95b76f4b47cffcc564d0cd0afc0435e;hpb=346ed5bd91f10489acd280e2165a951d6938f0df

diff --git a/source/renderer.cpp b/source/renderer.cpp
index 01c17a26..416a0fc8 100644
--- a/source/renderer.cpp
+++ b/source/renderer.cpp
@@ -5,15 +5,16 @@
 #include "error.h"
 #include "lighting.h"
 #include "material.h"
-#include "mesh.h"
 #include "program.h"
 #include "programdata.h"
 #include "renderable.h"
 #include "renderer.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;
@@ -21,19 +22,30 @@ using namespace std;
 namespace Msp {
 namespace GL {
 
+Renderer::Renderer():
+	default_camera(0)
+{
+	init();
+}
+
 Renderer::Renderer(const Camera *c):
-	mtx_stack(*this),
-	changed(0),
-	matrices_loaded(false),
-	shdata_applied(0),
-	camera(0),
-	state_stack(1)
+	default_camera(c)
+{
+	init();
+
+	if(c)
+		set_camera(*c);
+}
+
+void Renderer::init()
 {
 	state_stack.reserve(16);
+	state_stack.push_back(State());
 	shdata_stack.reserve(32);
 	state = &state_stack.back();
 
-	begin(c);
+	standard_shdata.uniform("projection_matrix", Matrix());
+	standard_shdata.uniform("eye_world_matrix", Matrix());
 }
 
 Renderer::~Renderer()
@@ -41,40 +53,31 @@ Renderer::~Renderer()
 	end();
 }
 
-void Renderer::begin(const Camera *c)
+void Renderer::set_camera(const Camera &c)
 {
-	if(state_stack.size()>1)
-		throw invalid_operation("Renderer::begin");
-
-	reset_state();
-	excluded.clear();
-	camera = c;
-
-	if(camera)
-	{
-		mtx_stack.load(camera->get_matrix());
-		standard_shdata.uniform("projection_matrix", camera->get_projection_matrix());
-	}
-	else
-	{
-		mtx_stack.load(MatrixStack::modelview().top());
-		standard_shdata.uniform("projection_matrix", MatrixStack::projection().top());
-	}
+	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());
 }
 
 void Renderer::set_matrix(const Matrix &matrix)
 {
-	mtx_stack.load(matrix);
+	state->modelview_matrix = matrix;
+	changed |= MATRIX;
 }
 
 void Renderer::transform(const Matrix &matrix)
 {
-	mtx_stack *= matrix;
+	state->modelview_matrix *= matrix;
+	changed |= MATRIX;
 }
 
-void Renderer::set_texture(const Texture *t)
+void Renderer::set_texture(const Texture *t, const Sampler *s)
 {
 	state->texture = t;
+	state->sampler = s;
 	state->texturing = 0;
 }
 
@@ -82,6 +85,7 @@ void Renderer::set_texturing(const Texturing *t)
 {
 	state->texturing = t;
 	state->texture = 0;
+	state->sampler = 0;
 }
 
 unsigned Renderer::allocate_effect_texunit()
@@ -98,22 +102,23 @@ void Renderer::set_material(const Material *m)
 void Renderer::set_lighting(const Lighting *l)
 {
 	state->lighting = l;
-	state->lighting_matrix = mtx_stack.top();
+	state->lighting_matrix = state->modelview_matrix;
 	if(l)
 	{
-		l->update_shader_data(standard_shdata, mtx_stack.top());
+		l->update_shader_data(standard_shdata, state->lighting_matrix);
 		changed |= STANDARD_SHDATA;
 	}
-	changed |= LEGACY_LIGHTING;
 }
 
 void Renderer::set_clipping(const Clipping *c)
 {
 	state->clipping = c;
-	state->clipping_matrix = mtx_stack.top();
+	state->clipping_matrix = state->modelview_matrix;
 	if(c)
-		c->update_shader_data(standard_shdata, mtx_stack.top());
-	changed |= LEGACY_CLIPPING;
+	{
+		c->update_shader_data(standard_shdata, state->clipping_matrix);
+		changed |= STANDARD_SHDATA;
+	}
 }
 
 void Renderer::set_shader_program(const Program *p, const ProgramData *d)
@@ -125,14 +130,26 @@ void Renderer::set_shader_program(const Program *p, const ProgramData *d)
 
 void Renderer::add_shader_data(const ProgramData &d)
 {
-	shdata_stack.push_back(&d);
-	state->shdata_count = shdata_stack.size();
-	changed |= SHADER_DATA;
+	if(state->shdata_count<shdata_stack.size() && shdata_stack[state->shdata_count]==&d)
+		++state->shdata_count;
+	else
+	{
+		flush_shader_data();
+		shdata_stack.push_back(&d);
+		state->shdata_count = shdata_stack.size();
+		changed |= SHADER_DATA;
+	}
 }
 
-void Renderer::set_mesh(const Mesh *m)
+void Renderer::flush_shader_data()
 {
-	state->mesh = m;
+	if(shdata_stack.size()>state->shdata_count)
+		shdata_stack.erase(shdata_stack.begin()+state->shdata_count, shdata_stack.end());
+}
+
+void Renderer::set_vertex_setup(const VertexSetup *vs)
+{
+	state->vertex_setup = vs;
 }
 
 void Renderer::set_winding_test(const WindingTest *w)
@@ -145,11 +162,15 @@ void Renderer::set_reverse_winding(bool r)
 	state->reverse_winding = r;
 }
 
+void Renderer::set_object_lod_bias(unsigned b)
+{
+	state->object_lod_bias = b;
+}
+
 void Renderer::push_state()
 {
 	state_stack.push_back(state_stack.back());
 	state = &state_stack.back();
-	mtx_stack.push();
 }
 
 void Renderer::pop_state()
@@ -157,53 +178,66 @@ void Renderer::pop_state()
 	if(state_stack.size()==1)
 		throw stack_underflow("Renderer::pop_state");
 
+	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();
-	if(shdata_stack.size()>state->shdata_count)
+	changed |= MATRIX;
+	bool camera_changed = (state->camera!=old_camera);
+	if(camera_changed)
 	{
-		shdata_stack.erase(shdata_stack.begin()+state->shdata_count, shdata_stack.end());
-		changed |= SHADER_DATA;
+		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;
 	}
-	shdata_applied = min<unsigned>(shdata_applied, shdata_stack.size());
-	mtx_stack.pop();
-	changed |= MATRIX;
-	if(state->lighting!=old_lighting)
+	/* 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 |= LEGACY_LIGHTING;
+			changed |= STANDARD_SHDATA;
+		}
 	}
-	if(state->clipping!=old_clipping)
+	if(state->clipping!=old_clipping || camera_changed)
 	{
 		if(state->clipping)
+		{
 			state->clipping->update_shader_data(standard_shdata, state->clipping_matrix);
-		changed |= LEGACY_CLIPPING;
+			changed |= STANDARD_SHDATA;
+		}
 	}
 }
 
-void Renderer::escape()
-{
-	apply_state();
-	Buffer::unbind_from(ELEMENT_ARRAY_BUFFER);
-	matrices_loaded = false;
-}
-
 void Renderer::end()
 {
 	if(state_stack.size()>1)
 		throw invalid_operation("Renderer::end");
 
-	reset_state();
+	*state = State();
+	if(default_camera)
+		set_camera(*default_camera);
+	else
+		standard_shdata.uniform("projection_matrix", Matrix());
+	shdata_stack.clear();
+	excluded.clear();
 
-	Mesh::unbind();
 	Texturing::unbind();
 	Texture::unbind_from(0);
-	Material::unbind();
-	Lighting::unbind();
 	Clipping::unbind();
 	Program::unbind();
+	VertexSetup::unbind();
 	Buffer::unbind_from(ELEMENT_ARRAY_BUFFER);
 	WindingTest::unbind();
 }
@@ -228,129 +262,85 @@ void Renderer::draw(const Batch &batch)
 {
 	apply_state();
 
-	bool legacy_bindings = (!state->shprog || state->shprog->uses_legacy_variables());
-	if(state->mesh && legacy_bindings)
-	{
-		if(const Buffer *ibuf = state->mesh->get_index_buffer())
-			ibuf->bind_to(ELEMENT_ARRAY_BUFFER);
-		else
-			Buffer::unbind_from(ELEMENT_ARRAY_BUFFER);
-	}
-
 	batch.draw();
 }
 
+void Renderer::draw_instanced(const Batch &batch, unsigned count)
+{
+	apply_state();
+
+	batch.draw_instanced(count);
+}
+
 void Renderer::apply_state()
 {
+	if(!state->shprog)
+		throw invalid_operation("Renderer::apply_state");
+
 	/* We (mostly) let the objects themselves figure out if the binding has
 	changed */
 
-	bool legacy_bindings = (!state->shprog || state->shprog->uses_legacy_variables());
-
 	if(state->texturing)
 		state->texturing->bind();
 	else
 	{
 		Texturing::unbind();
 		if(state->texture)
-			state->texture->bind_to(0);
-		else
-			Texture::unbind_from(0);
-	}
-
-	if(legacy_bindings)
-	{
-		if(state->material)
-			state->material->bind();
-		else
-			Material::unbind();
-
-		if(changed&LEGACY_LIGHTING)
 		{
-			if(state->lighting)
-			{
-				MatrixStack::modelview() = state->lighting_matrix;
-				state->lighting->bind();
-				changed = (changed&~LEGACY_LIGHTING)|LEGACY_MATRIX;
-			}
+			if(state->sampler)
+				state->sampler->bind_to(0);
 			else
-				Lighting::unbind();
+				Sampler::unbind_from(0);
+			state->texture->bind_to(0);
 		}
+		else
+			Texture::unbind_from(0);
 	}
 
 	if(state->clipping)
-	{
-		if(legacy_bindings)
-		{
-			if(changed&LEGACY_CLIPPING)
-			{
-				MatrixStack::modelview() = state->clipping_matrix;
-				state->clipping->bind(true);
-				changed = (changed&~LEGACY_CLIPPING)|LEGACY_MATRIX;
-			}
-		}
-		else
-			state->clipping->bind(false);
-	}
+		state->clipping->bind();
 	else
 		Clipping::unbind();
 
-	if(state->shprog)
+	bool shprog_changed = (state->shprog!=Program::current());
+	state->shprog->bind();
+
+	if(changed&MATRIX)
 	{
-		bool shprog_changed = (state->shprog!=Program::current());
-		state->shprog->bind();
+		standard_shdata.uniform("eye_obj_matrix", state->modelview_matrix);
+		LinAl::SquareMatrix<float, 3> nm = state->modelview_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;
+	}
 
-		if(!legacy_bindings)
-		{
-			if(changed&MODERN_MATRIX)
-			{
-				const Matrix &m = mtx_stack.top();
-				standard_shdata.uniform("eye_obj_matrix", mtx_stack.top());
-				LinAl::SquareMatrix<float, 3> nm = m.block<3, 3>(0, 0);
-				nm = transpose(invert(nm));
-				standard_shdata.uniform_matrix3("eye_obj_normal_matrix", &nm(0, 0));
-				changed = (changed&~MODERN_MATRIX)|STANDARD_SHDATA;
-			}
-
-			if(state->material && (changed&MATERIAL_SHDATA))
-			{
-				state->material->get_shader_data().apply();
-				changed &= ~MATERIAL_SHDATA;
-			}
-
-			if(changed&STANDARD_SHDATA)
-			{
-				standard_shdata.apply();
-				changed &= ~STANDARD_SHDATA;
-			}
-		}
+	if(state->material && ((changed&MATERIAL_SHDATA) || shprog_changed))
+	{
+		state->material->get_shader_data().apply();
+		changed &= ~MATERIAL_SHDATA;
+	}
 
-		if((changed&SHADER_DATA) || shprog_changed)
-		{
-			vector<const ProgramData *>::const_iterator i = shdata_stack.begin();
-			if(!shprog_changed)
-				i += shdata_applied;
-			for(; i!=shdata_stack.end(); ++i)
-				(*i)->apply();
-			changed &= ~SHADER_DATA;
-			shdata_applied = shdata_stack.size();
-		}
+	if((changed&STANDARD_SHDATA) || shprog_changed)
+	{
+		standard_shdata.apply();
+		changed &= ~STANDARD_SHDATA;
 	}
-	else
-		Program::unbind();
 
-	if(state->mesh)
+	bool extra_shdata = (shdata_stack.size()>state->shdata_count);
+
+	if((changed&SHADER_DATA) || shprog_changed || extra_shdata)
 	{
-		if(legacy_bindings)
-		{
-			Mesh::unbind();
-			state->mesh->get_vertices().apply();
-		}
-		else
-			state->mesh->bind();
+		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->vertex_setup)
+		state->vertex_setup->bind();
 	else
-		Mesh::unbind();
+		VertexSetup::unbind();
 
 	if(state->winding_test)
 	{
@@ -361,44 +351,11 @@ void Renderer::apply_state()
 	}
 	else
 		WindingTest::unbind();
-
-	if(legacy_bindings)
-	{
-		if(!matrices_loaded)
-		{
-			MatrixStack::modelview().push();
-			if(camera)
-			{
-				MatrixStack::projection().push();
-				camera->apply();
-			}
-			matrices_loaded = true;
-		}
-
-		if(changed&LEGACY_MATRIX)
-		{
-			MatrixStack::modelview() = mtx_stack.top();
-			changed &= ~LEGACY_MATRIX;
-		}
-	}
-}
-
-void Renderer::reset_state()
-{
-	if(!matrices_loaded)
-		return;
-
-	if(camera)
-		MatrixStack::projection().pop();
-	MatrixStack::modelview().pop();
-	matrices_loaded = false;
-	changed |= MATRIX;
-
-	*state = State();
 }
 
 
 Renderer::State::State():
+	camera(0),
 	texture(0),
 	texturing(0),
 	lowest_effect_texunit(TexUnit::get_n_units()),
@@ -407,20 +364,11 @@ Renderer::State::State():
 	clipping(0),
 	shprog(0),
 	shdata_count(0),
-	mesh(0),
+	vertex_setup(0),
 	winding_test(0),
-	reverse_winding(false)
-{ }
-
-
-Renderer::MtxStack::MtxStack(Renderer &r):
-	renderer(r)
+	reverse_winding(false),
+	object_lod_bias(0)
 { }
 
-void Renderer::MtxStack::update()
-{
-	renderer.changed |= MATRIX;
-}
-
 } // namespace GL
 } // namespace Msp