X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;f=source%2Fbackends%2Fopengl%2Fcommands_backend.cpp;h=0a4416c69814bea21aa00fda272c09642743e55f;hb=94cadd1618f93239b1cb0acbd4f958257c035c98;hp=adecd5c87bc71baeb9059332dc57b1535d8b8403;hpb=38712d8ecc57d043a2419ffbaeeb57f7a6586f14;p=libs%2Fgl.git

diff --git a/source/backends/opengl/commands_backend.cpp b/source/backends/opengl/commands_backend.cpp
index adecd5c8..0a4416c6 100644
--- a/source/backends/opengl/commands_backend.cpp
+++ b/source/backends/opengl/commands_backend.cpp
@@ -1,4 +1,5 @@
 #include <algorithm>
+#include <msp/gl/extensions/arb_compute_shader.h>
 #include <msp/gl/extensions/arb_direct_state_access.h>
 #include <msp/gl/extensions/arb_draw_instanced.h>
 #include <msp/gl/extensions/arb_occlusion_query.h>
@@ -18,6 +19,11 @@ using namespace std;
 namespace Msp {
 namespace GL {
 
+void OpenGLCommands::submit_frame()
+{
+	glFlush();
+}
+
 void OpenGLCommands::use_pipeline(const PipelineState *ps)
 {
 	pipeline_state = ps;
@@ -27,10 +33,13 @@ void OpenGLCommands::use_pipeline(const PipelineState *ps)
 
 void OpenGLCommands::clear(const ClearValue *values)
 {
-	const Framebuffer *target = pipeline_state->get_framebuffer();
+	const Framebuffer *target = (pipeline_state ? pipeline_state->get_framebuffer() : 0);
 	if(!target)
 		throw invalid_operation("OpenGLCommands::clear");
 
+	if(!values)
+		return;
+
 	static Require _req(MSP_clear_buffer);
 
 	pipeline_state->apply();
@@ -50,6 +59,9 @@ void OpenGLCommands::clear(const ClearValue *values)
 
 void OpenGLCommands::draw(const Batch &batch)
 {
+	if(!pipeline_state)
+		throw invalid_operation("OpenGLCommands::draw");
+
 	pipeline_state->apply();
 	void *data_ptr = reinterpret_cast<void *>(batch.get_offset());
 	glDrawElements(batch.gl_prim_type, batch.size(), batch.gl_index_type, data_ptr);
@@ -57,6 +69,9 @@ void OpenGLCommands::draw(const Batch &batch)
 
 void OpenGLCommands::draw_instanced(const Batch &batch, unsigned count)
 {
+	if(!pipeline_state)
+		throw invalid_operation("OpenGLCommands::draw_instanced");
+
 	static Require req(ARB_draw_instanced);
 
 	pipeline_state->apply();
@@ -64,28 +79,43 @@ void OpenGLCommands::draw_instanced(const Batch &batch, unsigned count)
 	glDrawElementsInstanced(batch.gl_prim_type, batch.size(), batch.gl_index_type, data_ptr, count);
 }
 
-void OpenGLCommands::resolve_multisample(Framebuffer &target)
+void OpenGLCommands::dispatch(unsigned count_x, unsigned count_y, unsigned count_z)
 {
-	static Require _req(EXT_framebuffer_blit);
+	if(!pipeline_state)
+		throw invalid_operation("OpenGLCommands::dispatch_compute");
 
-	const Framebuffer *source = pipeline_state->get_framebuffer();
+	static Require req(ARB_compute_shader);
 
-	unsigned width = min(source->get_width(), target.get_width());
-	unsigned height = min(source->get_height(), target.get_height());
-	unsigned buffers = get_gl_buffer_bits(source->get_format())&get_gl_buffer_bits(target.get_format());
+	pipeline_state->apply();
+	glDispatchCompute(count_x, count_y, count_z);
+}
+
+void OpenGLCommands::resolve_multisample()
+{
+	const Framebuffer *framebuffer = (pipeline_state ? pipeline_state->get_framebuffer() : 0);
+	if(!framebuffer)
+		throw invalid_operation("OpenGLCommands::resolve_multisample");
+
+	static Require _req(EXT_framebuffer_blit);
+
+	unsigned width = framebuffer->get_width();
+	unsigned height = framebuffer->get_height();
+	unsigned buffers = get_gl_buffer_bits(framebuffer->get_format());
 
 	if(ARB_direct_state_access)
-		glBlitNamedFramebuffer(source->id, target.id, 0, 0, width, height, 0, 0, width, height, buffers, GL_NEAREST);
+	{
+		framebuffer->refresh();
+		glBlitNamedFramebuffer(framebuffer->id, framebuffer->resolve_id, 0, 0, width, height, 0, 0, width, height, buffers, GL_NEAREST);
+	}
 	else
 	{
-		glBindFramebuffer(GL_READ_FRAMEBUFFER, source->id);
-		glBindFramebuffer(GL_DRAW_FRAMEBUFFER, target.id);
+		glBindFramebuffer(GL_FRAMEBUFFER, framebuffer->id);
 
-		target.refresh();
+		framebuffer->refresh();
 
+		glBindFramebuffer(GL_DRAW_FRAMEBUFFER, framebuffer->resolve_id);
 		glBlitFramebuffer(0, 0, width, height, 0, 0, width, height, buffers, GL_NEAREST);
-
-		glBindFramebuffer(GL_FRAMEBUFFER, source->id);
+		glBindFramebuffer(GL_DRAW_FRAMEBUFFER, framebuffer->id);
 	}
 }