From: Mikko Rasa <tdb@tdb.fi>
Date: Sun, 28 Jul 2019 00:03:58 +0000 (+0300)
Subject: Add a function to flush shader data in Renderer
X-Git-Url: http://git.tdb.fi/?p=libs%2Fgl.git;a=commitdiff_plain;h=afb95d09c066b45b7a66b644c04e2d0b2cee2723;hp=2341b3575c874b1960814264fa759ad584bf3134

Add a function to flush shader data in Renderer

Necessary if the same shader data object is used in successive draw
commands but the contained uniform values are changed.
---

diff --git a/source/renderer.cpp b/source/renderer.cpp
index 90ac4551..c5fe3c64 100644
--- a/source/renderer.cpp
+++ b/source/renderer.cpp
@@ -134,14 +134,19 @@ void Renderer::add_shader_data(const ProgramData &d)
 		++state->shdata_count;
 	else
 	{
-		if(shdata_stack.size()>state->shdata_count)
-			shdata_stack.erase(shdata_stack.begin()+state->shdata_count, shdata_stack.end());
+		flush_shader_data();
 		shdata_stack.push_back(&d);
 		state->shdata_count = shdata_stack.size();
 		changed |= SHADER_DATA;
 	}
 }
 
+void Renderer::flush_shader_data()
+{
+	if(shdata_stack.size()>state->shdata_count)
+		shdata_stack.erase(shdata_stack.begin()+state->shdata_count, shdata_stack.end());
+}
+
 void Renderer::set_mesh(const Mesh *m)
 {
 	state->mesh = m;
diff --git a/source/renderer.h b/source/renderer.h
index 973e1b00..f997171c 100644
--- a/source/renderer.h
+++ b/source/renderer.h
@@ -151,6 +151,8 @@ public:
 	Renderer state is popped. */
 	void add_shader_data(const ProgramData &data);
 
+	void flush_shader_data();
+
 	void set_mesh(const Mesh *);
 	void set_vertex_setup(const VertexSetup *);
 	void set_winding_test(const WindingTest *);