From e1c7b8c9bd19f0e4d9b763d1f30c175e49c5397d Mon Sep 17 00:00:00 2001
From: SmileTheory <SmileTheory@gmail.com>
Date: Tue, 5 Apr 2016 02:37:05 -0700
Subject: OpenGL2: Some FBO cleanup, and add non-depth blur to blur shader.

---
 src/renderergl2/tr_backend.c | 71 ++++++++++++++++++++++++++++++++++++++++++--
 1 file changed, 68 insertions(+), 3 deletions(-)

(limited to 'src/renderergl2/tr_backend.c')

diff --git a/src/renderergl2/tr_backend.c b/src/renderergl2/tr_backend.c
index f523ab32..0e331752 100644
--- a/src/renderergl2/tr_backend.c
+++ b/src/renderergl2/tr_backend.c
@@ -981,11 +981,11 @@ const void	*RB_DrawSurfs( const void *data ) {
 		if (tr.hdrDepthFbo)
 		{
 			// need the depth in a texture we can do GL_LINEAR sampling on, so copy it to an HDR image
-			ivec4_t srcBox;
+			vec4_t srcTexCoords;
 
-			VectorSet4(srcBox, 0, tr.renderDepthImage->height, tr.renderDepthImage->width, -tr.renderDepthImage->height);
+			VectorSet4(srcTexCoords, 0.0f, 0.0f, 1.0f, 1.0f);
 
-			FBO_BlitFromTexture(tr.renderDepthImage, srcBox, NULL, tr.hdrDepthFbo, NULL, NULL, NULL, 0);
+			FBO_BlitFromTexture(tr.renderDepthImage, srcTexCoords, NULL, tr.hdrDepthFbo, NULL, NULL, NULL, 0);
 		}
 
 		if (r_sunlightMode->integer && backEnd.viewParms.flags & VPF_USESUNLIGHT)
@@ -1585,6 +1585,71 @@ const void *RB_PostProcess(const void *data)
 	else
 		RB_GaussianBlur(backEnd.refdef.blurFactor);
 
+#if 0
+	if (0)
+	{
+		vec4_t quadVerts[4];
+		vec2_t texCoords[4];
+		ivec4_t iQtrBox;
+		vec4_t box;
+		vec4_t viewInfo;
+		static float scale = 5.0f;
+
+		scale -= 0.005f;
+		if (scale < 0.01f)
+			scale = 5.0f;
+
+		FBO_FastBlit(NULL, NULL, tr.quarterFbo[0], NULL, GL_COLOR_BUFFER_BIT, GL_LINEAR);
+
+		iQtrBox[0] = backEnd.viewParms.viewportX      * tr.quarterImage[0]->width / (float)glConfig.vidWidth;
+		iQtrBox[1] = backEnd.viewParms.viewportY      * tr.quarterImage[0]->height / (float)glConfig.vidHeight;
+		iQtrBox[2] = backEnd.viewParms.viewportWidth  * tr.quarterImage[0]->width / (float)glConfig.vidWidth;
+		iQtrBox[3] = backEnd.viewParms.viewportHeight * tr.quarterImage[0]->height / (float)glConfig.vidHeight;
+
+		qglViewport(iQtrBox[0], iQtrBox[1], iQtrBox[2], iQtrBox[3]);
+		qglScissor(iQtrBox[0], iQtrBox[1], iQtrBox[2], iQtrBox[3]);
+
+		VectorSet4(box, 0.0f, 0.0f, 1.0f, 1.0f);
+
+		texCoords[0][0] = box[0]; texCoords[0][1] = box[3];
+		texCoords[1][0] = box[2]; texCoords[1][1] = box[3];
+		texCoords[2][0] = box[2]; texCoords[2][1] = box[1];
+		texCoords[3][0] = box[0]; texCoords[3][1] = box[1];
+
+		VectorSet4(box, -1.0f, -1.0f, 1.0f, 1.0f);
+
+		VectorSet4(quadVerts[0], box[0], box[3], 0, 1);
+		VectorSet4(quadVerts[1], box[2], box[3], 0, 1);
+		VectorSet4(quadVerts[2], box[2], box[1], 0, 1);
+		VectorSet4(quadVerts[3], box[0], box[1], 0, 1);
+
+		GL_State(GLS_DEPTHTEST_DISABLE);
+
+
+		VectorSet4(viewInfo, backEnd.viewParms.zFar / r_znear->value, backEnd.viewParms.zFar, 0.0, 0.0);
+
+		viewInfo[2] = scale / (float)(tr.quarterImage[0]->width);
+		viewInfo[3] = scale / (float)(tr.quarterImage[0]->height);
+
+		FBO_Bind(tr.quarterFbo[1]);
+		GLSL_BindProgram(&tr.depthBlurShader[2]);
+		GL_BindToTMU(tr.quarterImage[0], TB_COLORMAP);
+		GLSL_SetUniformVec4(&tr.depthBlurShader[2], UNIFORM_VIEWINFO, viewInfo);
+		RB_InstantQuad2(quadVerts, texCoords);
+
+		FBO_Bind(tr.quarterFbo[0]);
+		GLSL_BindProgram(&tr.depthBlurShader[3]);
+		GL_BindToTMU(tr.quarterImage[1], TB_COLORMAP);
+		GLSL_SetUniformVec4(&tr.depthBlurShader[3], UNIFORM_VIEWINFO, viewInfo);
+		RB_InstantQuad2(quadVerts, texCoords);
+
+		SetViewportAndScissor();
+
+		FBO_FastBlit(tr.quarterFbo[1], NULL, NULL, NULL, GL_COLOR_BUFFER_BIT, GL_LINEAR);
+		FBO_Bind(NULL);
+	}
+#endif
+
 	if (0 && r_sunlightMode->integer)
 	{
 		ivec4_t dstBox;
-- 
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