X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;f=source%2Fbackends%2Fopengl%2Fpipelinestate_backend.cpp;h=204e8139f0fc70802aaf3592b68a60779a124bae;hb=9eb9f592d37e9a1e05c2ff70887a1c5f26b98864;hp=cda3439cbb6750b0a66ba8eaa0374371c019f859;hpb=f82ef715f0d7e1e7d0b93be4b7b89c8ce6bba40b;p=libs%2Fgl.git

diff --git a/source/backends/opengl/pipelinestate_backend.cpp b/source/backends/opengl/pipelinestate_backend.cpp
index cda3439c..204e8139 100644
--- a/source/backends/opengl/pipelinestate_backend.cpp
+++ b/source/backends/opengl/pipelinestate_backend.cpp
@@ -1,14 +1,16 @@
 #include <msp/gl/extensions/arb_direct_state_access.h>
 #include <msp/gl/extensions/arb_sampler_objects.h>
+#include <msp/gl/extensions/arb_shader_image_load_store.h>
 #include <msp/gl/extensions/arb_shader_objects.h>
 #include <msp/gl/extensions/arb_uniform_buffer_object.h>
 #include <msp/gl/extensions/arb_vertex_array_object.h>
+#include <msp/gl/extensions/arb_tessellation_shader.h>
 #include <msp/gl/extensions/ext_framebuffer_object.h>
 #include <msp/gl/extensions/msp_primitive_restart.h>
 #include "blend.h"
 #include "buffer.h"
 #include "depthtest.h"
-#include "deviceinfo.h"
+#include "device.h"
 #include "framebuffer.h"
 #include "gl.h"
 #include "pipelinestate.h"
@@ -26,41 +28,37 @@ using namespace std;
 namespace Msp {
 namespace GL {
 
-const OpenGLPipelineState *OpenGLPipelineState::last_applied = 0;
-vector<int> OpenGLPipelineState::bound_tex_targets;
-vector<char> OpenGLPipelineState::bound_uniform_blocks;
-unsigned OpenGLPipelineState::restart_index = 0;
-unsigned OpenGLPipelineState::n_clip_distances = 0;
-
-OpenGLPipelineState::OpenGLPipelineState()
-{
-	if(bound_tex_targets.empty())
-		bound_tex_targets.resize(DeviceInfo::get_global().limits.max_texture_bindings);
-	if(bound_uniform_blocks.empty())
-		bound_uniform_blocks.resize(DeviceInfo::get_global().limits.max_uniform_bindings);
-}
-
 OpenGLPipelineState::~OpenGLPipelineState()
 {
-	if(this==last_applied)
-		last_applied = 0;
+	if(applied_to)
+		applied_to->get_state().last_pipeline = 0;
 }
 
 void OpenGLPipelineState::apply() const
 {
-	if(!last_applied)
-		OpenGLTexture::unbind_scratch();
+	const PipelineState &self = *static_cast<const PipelineState *>(this);
+	Device &device = Device::get_current();
 
-	apply(this==last_applied ? static_cast<const PipelineState *>(this)->changes : ~0U);
-}
+	if(applied_to && applied_to!=&device)
+	{
+		applied_to->get_state().last_pipeline = 0;
+		changes = ~0U;
+	}
 
-void OpenGLPipelineState::apply(unsigned mask) const
-{
-	const PipelineState *self = static_cast<const PipelineState *>(this);
+	OpenGLDeviceState &dev_state = device.get_state();
+	if(!dev_state.last_pipeline)
+		OpenGLTexture::unbind_scratch();
+	
+	if(this!=dev_state.last_pipeline)
+	{
+		if(dev_state.last_pipeline)
+			dev_state.last_pipeline->applied_to = 0;
+		changes = ~0U;
+	}
 
-	if(mask&PipelineState::FRAMEBUFFER)
+	if(changes&PipelineState::FRAMEBUFFER)
 	{
-		const Framebuffer *framebuffer = self->framebuffer;
+		const Framebuffer *framebuffer = self.framebuffer;
 		glBindFramebuffer(GL_FRAMEBUFFER, framebuffer ? framebuffer->id : 0);
 		if(framebuffer)
 		{
@@ -69,46 +67,103 @@ void OpenGLPipelineState::apply(unsigned mask) const
 		}
 	}
 
-	if(mask&(PipelineState::VIEWPORT|PipelineState::FRAMEBUFFER))
-	{
-		if(const Rect *viewport = self->viewport)
-			glViewport(viewport->left, viewport->bottom, viewport->width, viewport->height);
-		else if(const Framebuffer *framebuffer = self->framebuffer)
-			glViewport(0, 0, framebuffer->get_width(), framebuffer->get_height());
-	}
-
-	if(mask&PipelineState::SCISSOR)
-	{
-		if(const Rect *scissor = self->scissor)
+	if(changes&(PipelineState::VIEWPORT|PipelineState::SCISSOR|PipelineState::FRAMEBUFFER))
+		if(const Framebuffer *framebuffer = self.framebuffer)
 		{
-			glEnable(GL_SCISSOR_TEST);
-			glScissor(scissor->left, scissor->bottom, scissor->width, scissor->height);
+			Rect fb_rect = framebuffer->get_rect();
+			if(changes&(PipelineState::VIEWPORT|PipelineState::FRAMEBUFFER))
+			{
+				Rect viewport = fb_rect.intersect(self.viewport);
+				glViewport(viewport.left, viewport.bottom, viewport.width, viewport.height);
+			}
+			if(changes&(PipelineState::SCISSOR|PipelineState::FRAMEBUFFER))
+			{
+				Rect scissor = fb_rect.intersect(self.scissor);
+				if(scissor!=fb_rect)
+				{
+					glEnable(GL_SCISSOR_TEST);
+					glScissor(scissor.left, scissor.bottom, scissor.width, scissor.height);
+				}
+				else
+					glDisable(GL_SCISSOR_TEST);
+			}
 		}
-		else
-			glDisable(GL_SCISSOR_TEST);
-	}
 
-	if(mask&PipelineState::SHPROG)
+	if(changes&PipelineState::SHPROG)
 	{
-		glUseProgram(self->shprog ? self->shprog->id : 0);
+		glUseProgram(self.shprog ? self.shprog->id : 0);
 
-		unsigned ncd = (self->shprog ? self->shprog->get_n_clip_distances() : 0);
-		if(ncd!=n_clip_distances)
+		unsigned ncd = (self.shprog ? self.shprog->get_n_clip_distances() : 0);
+		if(ncd!=dev_state.n_clip_distances)
 		{
-			for(unsigned i=0; (i<ncd || i<n_clip_distances); ++i)
+			for(unsigned i=0; (i<ncd || i<dev_state.n_clip_distances); ++i)
 			{
 				if(i<ncd)
 					glEnable(GL_CLIP_PLANE0+i);
 				else
 					glDisable(GL_CLIP_PLANE0+i);
 			}
-			n_clip_distances = ncd;
+			dev_state.n_clip_distances = ncd;
 		}
 	}
 
-	if(mask&PipelineState::VERTEX_SETUP)
+	if(changes&PipelineState::RESOURCES)
 	{
-		const VertexSetup *vertex_setup = self->vertex_setup;
+		for(const PipelineState::BoundResource &r: self.resources)
+		{
+			if(!r.changed && changes!=~0U)
+				continue;
+
+			if(r.used)
+			{
+				if(r.type==PipelineState::UNIFORM_BLOCK)
+				{
+					if(r.binding>=0)
+					{
+						glBindBufferRange(GL_UNIFORM_BUFFER, r.binding, r.buffer->id, r.block->get_offset(), r.block->get_data_size());
+						dev_state.bound_uniform_blocks[r.binding] = 1;
+					}
+					else if(r.binding==ReflectData::DEFAULT_BLOCK && self.shprog)
+					{
+						const char *data = static_cast<const char *>(r.block->get_data_pointer());
+						for(const Program::UniformCall &call: self.shprog->uniform_calls)
+							call.func(call.location, call.size, data+call.location*16);
+					}
+				}
+				else if(r.type==PipelineState::SAMPLED_TEXTURE)
+				{
+					if(ARB_direct_state_access)
+						glBindTextureUnit(r.binding, r.texture->id);
+					else
+					{
+						glActiveTexture(GL_TEXTURE0+r.binding);
+						if(dev_state.bound_tex_targets[r.binding] && static_cast<int>(r.texture->target)!=dev_state.bound_tex_targets[r.binding])
+							glBindTexture(dev_state.bound_tex_targets[r.binding], 0);
+						glBindTexture(r.texture->target, r.texture->id);
+					}
+
+					dev_state.bound_tex_targets[r.binding] = r.texture->target;
+
+					glBindSampler(r.binding, r.sampler->id);
+					r.sampler->refresh();
+				}
+				else if(r.type==PipelineState::STORAGE_TEXTURE)
+				{
+					static Require _req(ARB_shader_image_load_store);
+					GLenum gl_format = get_gl_pixelformat(r.texture->get_format());
+					glBindImageTexture(r.binding, r.texture->id, 0, true, 0, GL_READ_WRITE, gl_format);
+
+					dev_state.bound_storage_textures[r.binding] = 1;
+				}
+			}
+
+			r.changed = false;
+		}
+	}
+
+	if(changes&PipelineState::VERTEX_SETUP)
+	{
+		const VertexSetup *vertex_setup = self.vertex_setup;
 		glBindVertexArray(vertex_setup ? vertex_setup->id : 0);
 		if(vertex_setup)
 		{
@@ -116,117 +171,73 @@ void OpenGLPipelineState::apply(unsigned mask) const
 
 			vertex_setup->refresh();
 			unsigned ri = (vertex_setup->get_index_type()==UNSIGNED_INT ? 0xFFFFFFFF : 0xFFFF);
-			if(ri!=restart_index)
+			if(ri!=dev_state.restart_index)
 			{
-				if(!restart_index)
+				if(!dev_state.restart_index)
 					glEnable(GL_PRIMITIVE_RESTART);
 				glPrimitiveRestartIndex(ri);
-				restart_index = ri;
+				dev_state.restart_index = ri;
 			}
 		}
 	}
 
-	if(mask&PipelineState::FACE_CULL)
+	if(changes&PipelineState::PATCH_SIZE)
+		if(self.patch_size)
+		{
+			static Require _req(ARB_tessellation_shader);
+			glPatchParameteri(GL_PATCH_VERTICES, self.patch_size);
+		}
+
+	if(changes&PipelineState::FACE_CULL)
 	{
-		glFrontFace(self->front_face==CLOCKWISE ? GL_CW : GL_CCW);
+		glFrontFace(self.front_face==CLOCKWISE ? GL_CW : GL_CCW);
 
-		if(self->face_cull!=NO_CULL && self->front_face!=NON_MANIFOLD)
+		if(self.face_cull!=NO_CULL && self.front_face!=NON_MANIFOLD)
 		{
 			glEnable(GL_CULL_FACE);
-			glCullFace(self->face_cull==CULL_FRONT ? GL_FRONT : GL_BACK);
+			glCullFace(self.face_cull==CULL_FRONT ? GL_FRONT : GL_BACK);
 		}
 		else
 			glDisable(GL_CULL_FACE);
 	}
 
-	if(mask&PipelineState::TEXTURES)
+	if(changes&PipelineState::DEPTH_TEST)
 	{
-		for(const PipelineState::BoundTexture &t: self->textures)
-			if(t.changed || mask==~0U)
-			{
-				if(t.texture && t.sampler)
-				{
-					if(ARB_direct_state_access)
-						glBindTextureUnit(t.binding, t.texture->id);
-					else
-					{
-						glActiveTexture(GL_TEXTURE0+t.binding);
-						if(bound_tex_targets[t.binding] && static_cast<int>(t.texture->target)!=bound_tex_targets[t.binding])
-							glBindTexture(bound_tex_targets[t.binding], 0);
-						glBindTexture(t.texture->target, t.texture->id);
-					}
-
-					bound_tex_targets[t.binding] = t.texture->target;
-
-					glBindSampler(t.binding, t.sampler->id);
-					t.sampler->refresh();
-				}
-
-				t.changed = false;
-			}
-	}
-
-	if(mask&PipelineState::UNIFORMS)
-	{
-		for(const PipelineState::BoundUniformBlock &u: self->uniform_blocks)
-			if(u.changed || mask==~0U)
-			{
-				if(u.block)
-				{
-					if(u.binding>=0)
-					{
-						glBindBufferRange(GL_UNIFORM_BUFFER, u.binding, u.block->get_buffer()->id, u.block->get_offset(), u.block->get_data_size());
-						bound_uniform_blocks[u.binding] = 1;
-					}
-					else if(self->shprog)
-					{
-						const char *data = static_cast<const char *>(u.block->get_data_pointer());
-						for(const Program::UniformCall &call: self->shprog->uniform_calls)
-							call.func(call.location, call.size, data+call.location*16);
-					}
-				}
-
-				u.changed = false;
-			}
-	}
-
-	if(mask&PipelineState::DEPTH_TEST)
-	{
-		const DepthTest *depth_test = self->depth_test;
-		if(depth_test && depth_test->enabled)
+		const DepthTest &depth_test = self.depth_test;
+		if(depth_test.enabled)
 		{
 			glEnable(GL_DEPTH_TEST);
-			glDepthFunc(get_gl_predicate(depth_test->compare));
+			glDepthFunc(get_gl_predicate(depth_test.compare));
 		}
 		else
 			glDisable(GL_DEPTH_TEST);
 
-		glDepthMask(!depth_test || depth_test->write);
+		glDepthMask(depth_test.write);
 	}
 
-	if(mask&PipelineState::STENCIL_TEST)
+	if(changes&PipelineState::STENCIL_TEST)
 	{
-		const StencilTest *stencil_test = self->stencil_test;
-		if(stencil_test && stencil_test->enabled)
+		const StencilTest &stencil_test = self.stencil_test;
+		if(stencil_test.enabled)
 		{
 			glEnable(GL_STENCIL_TEST);
-			glStencilFunc(get_gl_predicate(stencil_test->compare), stencil_test->reference, 0xFFFFFFFF);
-			glStencilOp(get_gl_stencil_op(stencil_test->stencil_fail_op), get_gl_stencil_op(stencil_test->depth_fail_op), get_gl_stencil_op(stencil_test->depth_pass_op));
+			glStencilFunc(get_gl_predicate(stencil_test.compare), stencil_test.reference, 0xFFFFFFFF);
+			glStencilOp(get_gl_stencil_op(stencil_test.stencil_fail_op), get_gl_stencil_op(stencil_test.depth_fail_op), get_gl_stencil_op(stencil_test.depth_pass_op));
 		}
 		else
 			glDisable(GL_STENCIL_TEST);
 	}
 
-	if(mask&PipelineState::BLEND)
+	if(changes&PipelineState::BLEND)
 	{
-		const Blend *blend = self->blend;
-		if(blend && blend->enabled)
+		const Blend &blend = self.blend;
+		if(blend.enabled)
 		{
 			glEnable(GL_BLEND);
-			glBlendEquation(get_gl_blend_equation(blend->equation));
-			glBlendFunc(get_gl_blend_factor(blend->src_factor), get_gl_blend_factor(blend->dst_factor));
-			glBlendColor(blend->constant.r, blend->constant.g, blend->constant.b, blend->constant.a);
-			ColorWriteMask cw = blend->write_mask;
+			glBlendEquation(get_gl_blend_equation(blend.equation));
+			glBlendFunc(get_gl_blend_factor(blend.src_factor), get_gl_blend_factor(blend.dst_factor));
+			glBlendColor(blend.constant.r, blend.constant.g, blend.constant.b, blend.constant.a);
+			ColorWriteMask cw = blend.write_mask;
 			glColorMask((cw&WRITE_RED)!=0, (cw&WRITE_GREEN)!=0, (cw&WRITE_BLUE)!=0, (cw&WRITE_ALPHA)!=0);
 		}
 		else
@@ -234,41 +245,55 @@ void OpenGLPipelineState::apply(unsigned mask) const
 			glDisable(GL_BLEND);
 			glColorMask(true, true, true, true);
 		}
+
+		if(blend.alpha_to_coverage && self.framebuffer && self.framebuffer->get_format().get_samples()>1)
+			glEnable(GL_SAMPLE_ALPHA_TO_COVERAGE);
+		else
+			glDisable(GL_SAMPLE_ALPHA_TO_COVERAGE);
 	}
 
-	last_applied = this;
-	self->changes &= ~mask;
+	applied_to = &device;
+	dev_state.last_pipeline = this;
+	changes = 0;
 }
 
 void OpenGLPipelineState::clear()
 {
-	if(last_applied)
+	OpenGLDeviceState &dev_state = Device::get_current().get_state();
+	if(dev_state.last_pipeline)
 	{
 		glUseProgram(0);
 		glBindVertexArray(0);
 
-		for(unsigned i=0; i<n_clip_distances; ++i)
+		for(unsigned i=0; i<dev_state.n_clip_distances; ++i)
 			glDisable(GL_CLIP_PLANE0+i);
-		n_clip_distances = 0;
+		dev_state.n_clip_distances = 0;
 
-		for(unsigned i=0; i<bound_tex_targets.size(); ++i)
-			if(bound_tex_targets[i])
+		for(unsigned i=0; i<dev_state.bound_tex_targets.size(); ++i)
+			if(dev_state.bound_tex_targets[i])
 			{
 				if(ARB_direct_state_access)
 					glBindTextureUnit(i, 0);
 				else
 				{
 					glActiveTexture(GL_TEXTURE0+i);
-					glBindTexture(bound_tex_targets[i], 0);
+					glBindTexture(dev_state.bound_tex_targets[i], 0);
 				}
-				bound_tex_targets[i] = 0;
+				dev_state.bound_tex_targets[i] = 0;
+			}
+
+		for(unsigned i=0; i<dev_state.bound_storage_textures.size(); ++i)
+			if(dev_state.bound_storage_textures[i])
+			{
+				glBindImageTexture(i, 0, 0, true, 0, GL_READ_ONLY, GL_RGBA8);
+				dev_state.bound_storage_textures[i] = 0;
 			}
 
-		for(unsigned i=0; i<bound_uniform_blocks.size(); ++i)
-			if(bound_uniform_blocks[i])
+		for(unsigned i=0; i<dev_state.bound_uniform_blocks.size(); ++i)
+			if(dev_state.bound_uniform_blocks[i])
 			{
 				glBindBufferBase(GL_UNIFORM_BUFFER, i, 0);
-				bound_uniform_blocks[i] = 0;
+				dev_state.bound_uniform_blocks[i] = 0;
 			}
 
 		glDisable(GL_DEPTH_TEST);
@@ -276,7 +301,8 @@ void OpenGLPipelineState::clear()
 		glDisable(GL_STENCIL_TEST);
 		glDisable(GL_BLEND);
 
-		last_applied = 0;
+		dev_state.last_pipeline->applied_to = 0;
+		dev_state.last_pipeline = 0;
 	}
 }