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OpenGL2: Add r_shadowBlur.

This commit is contained in:
SmileTheory 2016-03-07 02:27:03 -08:00
parent a331637745
commit 90d6f941f8
6 changed files with 73 additions and 43 deletions
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20
code/renderergl2/glsl/depthblur_fp.glsl
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@ -1,13 +1,13 @@
uniform sampler2D u_ScreenImageMap;
uniform sampler2D u_ScreenDepthMap;
uniform vec4 u_ViewInfo; // zfar / znear, zfar
uniform vec4 u_ViewInfo; // zfar / znear, zfar, 1/width, 1/height
varying vec2 var_ScreenTex;
//float gauss[5] = float[5](0.30, 0.23, 0.097, 0.024, 0.0033);
float gauss[4] = float[4](0.40, 0.24, 0.054, 0.0044);
//float gauss[3] = float[3](0.60, 0.19, 0.0066);
#define GAUSS_SIZE 4
#define BLUR_SIZE 4
float getLinearDepth(sampler2D depthMap, const vec2 tex, const float zFarDivZNear)
{
@ -17,7 +17,7 @@ float getLinearDepth(sampler2D depthMap, const vec2 tex, const float zFarDivZNea
vec4 depthGaussian1D(sampler2D imageMap, sampler2D depthMap, vec2 tex, float zFarDivZNear, float zFar)
{
float scale = 1.0 / 256.0;
vec2 scale = u_ViewInfo.zw;
#if defined(USE_HORIZONTAL_BLUR)
vec2 direction = vec2(1.0, 0.0) * scale;
@ -27,22 +27,32 @@ vec4 depthGaussian1D(sampler2D imageMap, sampler2D depthMap, vec2 tex, float zFa
float depthCenter = zFar * getLinearDepth(depthMap, tex, zFarDivZNear);
vec2 centerSlope = vec2(dFdx(depthCenter), dFdy(depthCenter)) / vec2(dFdx(tex.x), dFdy(tex.y));
#if defined(USE_GAUSS)
vec4 result = texture2D(imageMap, tex) * gauss[0];
float total = gauss[0];
#else
vec4 result = texture2D(imageMap, tex);
float total = 1.0;
#endif
int i, j;
for (i = 0; i < 2; i++)
{
for (j = 1; j < GAUSS_SIZE; j++)
for (j = 1; j < BLUR_SIZE; j++)
{
vec2 offset = direction * j;
float depthSample = zFar * getLinearDepth(depthMap, tex + offset, zFarDivZNear);
float depthExpected = depthCenter + dot(centerSlope, offset);
if(abs(depthSample - depthExpected) < 5.0)
{
#if defined(USE_GAUSS)
result += texture2D(imageMap, tex + offset) * gauss[j];
total += gauss[j];
#else
result += texture2D(imageMap, tex + offset);
total += 1.0;
#endif
}
}

74
code/renderergl2/tr_backend.c
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@ -956,6 +956,9 @@ const void *RB_DrawSurfs( const void *data ) {
if (glRefConfig.framebufferObject && !(backEnd.refdef.rdflags & RDF_NOWORLDMODEL) && (r_depthPrepass->integer || (backEnd.viewParms.flags & VPF_DEPTHSHADOW)))
{
FBO_t *oldFbo = glState.currentFBO;
vec4_t viewInfo;
VectorSet4(viewInfo, backEnd.viewParms.zFar / r_znear->value, backEnd.viewParms.zFar, 0.0, 0.0);
backEnd.depthFill = qtrue;
qglColorMask(GL_FALSE, GL_FALSE, GL_FALSE, GL_FALSE);
@ -1042,15 +1045,12 @@ const void *RB_DrawSurfs( const void *data ) {
GLSL_SetUniformVec3(&tr.shadowmaskShader, UNIFORM_VIEWORIGIN, backEnd.refdef.vieworg);
{
vec4_t viewInfo;
vec3_t viewVector;
float zmax = backEnd.viewParms.zFar;
float ymax = zmax * tan(backEnd.viewParms.fovY * M_PI / 360.0f);
float xmax = zmax * tan(backEnd.viewParms.fovX * M_PI / 360.0f);
float zmin = r_znear->value;
VectorScale(backEnd.refdef.viewaxis[0], zmax, viewVector);
GLSL_SetUniformVec3(&tr.shadowmaskShader, UNIFORM_VIEWFORWARD, viewVector);
VectorScale(backEnd.refdef.viewaxis[1], xmax, viewVector);
@ -1058,13 +1058,39 @@ const void *RB_DrawSurfs( const void *data ) {
VectorScale(backEnd.refdef.viewaxis[2], ymax, viewVector);
GLSL_SetUniformVec3(&tr.shadowmaskShader, UNIFORM_VIEWUP, viewVector);
VectorSet4(viewInfo, zmax / zmin, zmax, 0.0, 0.0);
GLSL_SetUniformVec4(&tr.shadowmaskShader, UNIFORM_VIEWINFO, viewInfo);
}
RB_InstantQuad2(quadVerts, texCoords); //, color, shaderProgram, invTexRes);
if (r_shadowBlur->integer)
{
viewInfo[2] = 1.0f / (float)(tr.screenScratchFbo->width);
viewInfo[3] = 1.0f / (float)(tr.screenScratchFbo->height);
FBO_Bind(tr.screenScratchFbo);
GLSL_BindProgram(&tr.depthBlurShader[0]);
GL_BindToTMU(tr.screenShadowImage, TB_COLORMAP);
GL_BindToTMU(tr.hdrDepthImage, TB_LIGHTMAP);
GLSL_SetUniformVec4(&tr.depthBlurShader[0], UNIFORM_VIEWINFO, viewInfo);
RB_InstantQuad2(quadVerts, texCoords);
FBO_Bind(tr.screenShadowFbo);
GLSL_BindProgram(&tr.depthBlurShader[1]);
GL_BindToTMU(tr.screenScratchImage, TB_COLORMAP);
GL_BindToTMU(tr.hdrDepthImage, TB_LIGHTMAP);
GLSL_SetUniformVec4(&tr.depthBlurShader[1], UNIFORM_VIEWINFO, viewInfo);
RB_InstantQuad2(quadVerts, texCoords);
}
}
if (r_ssao->integer)
@ -1072,6 +1098,9 @@ const void *RB_DrawSurfs( const void *data ) {
vec4_t quadVerts[4];
vec2_t texCoords[4];
viewInfo[2] = 1.0f / (float)(tr.quarterImage[0]->width);
viewInfo[3] = 1.0f / (float)(tr.quarterImage[0]->height);
FBO_Bind(tr.quarterFbo[0]);
qglViewport(0, 0, tr.quarterFbo[0]->width, tr.quarterFbo[0]->height);
@ -1093,16 +1122,7 @@ const void *RB_DrawSurfs( const void *data ) {
GL_BindToTMU(tr.hdrDepthImage, TB_COLORMAP);
{
vec4_t viewInfo;
float zmax = backEnd.viewParms.zFar;
float zmin = r_znear->value;
VectorSet4(viewInfo, zmax / zmin, zmax, 0.0, 0.0);
GLSL_SetUniformVec4(&tr.ssaoShader, UNIFORM_VIEWINFO, viewInfo);
}
GLSL_SetUniformVec4(&tr.ssaoShader, UNIFORM_VIEWINFO, viewInfo);
RB_InstantQuad2(quadVerts, texCoords); //, color, shaderProgram, invTexRes);
@ -1117,16 +1137,7 @@ const void *RB_DrawSurfs( const void *data ) {
GL_BindToTMU(tr.quarterImage[0], TB_COLORMAP);
GL_BindToTMU(tr.hdrDepthImage, TB_LIGHTMAP);
{
vec4_t viewInfo;
float zmax = backEnd.viewParms.zFar;
float zmin = r_znear->value;
VectorSet4(viewInfo, zmax / zmin, zmax, 0.0, 0.0);
GLSL_SetUniformVec4(&tr.depthBlurShader[0], UNIFORM_VIEWINFO, viewInfo);
}
GLSL_SetUniformVec4(&tr.depthBlurShader[0], UNIFORM_VIEWINFO, viewInfo);
RB_InstantQuad2(quadVerts, texCoords); //, color, shaderProgram, invTexRes);
@ -1141,16 +1152,7 @@ const void *RB_DrawSurfs( const void *data ) {
GL_BindToTMU(tr.quarterImage[1], TB_COLORMAP);
GL_BindToTMU(tr.hdrDepthImage, TB_LIGHTMAP);
{
vec4_t viewInfo;
float zmax = backEnd.viewParms.zFar;
float zmin = r_znear->value;
VectorSet4(viewInfo, zmax / zmin, zmax, 0.0, 0.0);
GLSL_SetUniformVec4(&tr.depthBlurShader[1], UNIFORM_VIEWINFO, viewInfo);
}
GLSL_SetUniformVec4(&tr.depthBlurShader[1], UNIFORM_VIEWINFO, viewInfo);
RB_InstantQuad2(quadVerts, texCoords); //, color, shaderProgram, invTexRes);

8
code/renderergl2/tr_fbo.c
View File

@ -310,6 +310,14 @@ void FBO_Init(void)
qglClear( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT );
}
if (r_shadowBlur->integer)
{
tr.screenScratchFbo = FBO_Create("screenScratch", tr.screenScratchImage->width, tr.screenScratchImage->height);
FBO_AttachImage(tr.screenScratchFbo, tr.screenScratchImage, GL_COLOR_ATTACHMENT0_EXT, 0);
FBO_AttachImage(tr.screenScratchFbo, tr.renderDepthImage, GL_DEPTH_ATTACHMENT_EXT, 0);
R_CheckFBO(tr.screenScratchFbo);
}
if (r_drawSunRays->integer)
{
tr.sunRaysFbo = FBO_Create("_sunRays", tr.renderDepthImage->width, tr.renderDepthImage->height);

7
code/renderergl2/tr_image.c
View File

@ -2754,6 +2754,12 @@ void R_CreateBuiltinImages( void ) {
tr.renderImage = R_CreateImage("_render", NULL, width, height, IMGTYPE_COLORALPHA, IMGFLAG_NO_COMPRESSION | IMGFLAG_CLAMPTOEDGE, hdrFormat);
if (r_shadowBlur->integer)
tr.screenScratchImage = R_CreateImage("screenScratch", NULL, width, height, IMGTYPE_COLORALPHA, IMGFLAG_NO_COMPRESSION | IMGFLAG_CLAMPTOEDGE, rgbFormat);
if (r_shadowBlur->integer || r_ssao->integer)
tr.hdrDepthImage = R_CreateImage("*hdrDepth", NULL, width, height, IMGTYPE_COLORALPHA, IMGFLAG_NO_COMPRESSION | IMGFLAG_CLAMPTOEDGE, GL_INTENSITY32F_ARB);
if (r_drawSunRays->integer)
tr.sunRaysImage = R_CreateImage("*sunRays", NULL, width, height, IMGTYPE_COLORALPHA, IMGFLAG_NO_COMPRESSION | IMGFLAG_CLAMPTOEDGE, rgbFormat);
@ -2801,7 +2807,6 @@ void R_CreateBuiltinImages( void ) {
if (r_ssao->integer)
{
tr.screenSsaoImage = R_CreateImage("*screenSsao", NULL, width / 2, height / 2, IMGTYPE_COLORALPHA, IMGFLAG_NO_COMPRESSION | IMGFLAG_CLAMPTOEDGE, GL_RGBA8);
tr.hdrDepthImage = R_CreateImage("*hdrDepth", NULL, width, height, IMGTYPE_COLORALPHA, IMGFLAG_NO_COMPRESSION | IMGFLAG_CLAMPTOEDGE, GL_INTENSITY32F_ARB);
}
if (r_shadows->integer == 4)

4
code/renderergl2/tr_init.c
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@ -162,6 +162,7 @@ cvar_t *r_sunlightMode;
cvar_t *r_drawSunRays;
cvar_t *r_sunShadows;
cvar_t *r_shadowFilter;
cvar_t *r_shadowBlur;
cvar_t *r_shadowMapSize;
cvar_t *r_shadowCascadeZNear;
cvar_t *r_shadowCascadeZFar;
@ -1252,7 +1253,8 @@ void R_Register( void )
r_sunShadows = ri.Cvar_Get( "r_sunShadows", "1", CVAR_ARCHIVE | CVAR_LATCH );
r_shadowFilter = ri.Cvar_Get( "r_shadowFilter", "1", CVAR_ARCHIVE | CVAR_LATCH );
r_shadowMapSize = ri.Cvar_Get( "r_shadowMapSize", "1024", CVAR_ARCHIVE | CVAR_LATCH );
r_shadowBlur = ri.Cvar_Get("r_shadowBlur", "0", CVAR_ARCHIVE | CVAR_LATCH);
r_shadowMapSize = ri.Cvar_Get("r_shadowMapSize", "1024", CVAR_ARCHIVE | CVAR_LATCH);
r_shadowCascadeZNear = ri.Cvar_Get( "r_shadowCascadeZNear", "8", CVAR_ARCHIVE | CVAR_LATCH );
r_shadowCascadeZFar = ri.Cvar_Get( "r_shadowCascadeZFar", "1024", CVAR_ARCHIVE | CVAR_LATCH );
r_shadowCascadeZBias = ri.Cvar_Get( "r_shadowCascadeZBias", "0", CVAR_ARCHIVE | CVAR_LATCH );

3
code/renderergl2/tr_local.h
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@ -1520,6 +1520,7 @@ typedef struct {
image_t *sunRaysImage;
image_t *renderDepthImage;
image_t *pshadowMaps[MAX_DRAWN_PSHADOWS];
image_t *screenScratchImage;
image_t *textureScratchImage[2];
image_t *quarterImage[2];
image_t *calcLevelsImage;
@ -1538,6 +1539,7 @@ typedef struct {
FBO_t *sunRaysFbo;
FBO_t *depthFbo;
FBO_t *pshadowFbos[MAX_DRAWN_PSHADOWS];
FBO_t *screenScratchFbo;
FBO_t *textureScratchFbo[2];
FBO_t *quarterFbo[2];
FBO_t *calcLevelsFbo;
@ -1807,6 +1809,7 @@ extern cvar_t *r_sunlightMode;
extern cvar_t *r_drawSunRays;
extern cvar_t *r_sunShadows;
extern cvar_t *r_shadowFilter;
extern cvar_t *r_shadowBlur;
extern cvar_t *r_shadowMapSize;
extern cvar_t *r_shadowCascadeZNear;
extern cvar_t *r_shadowCascadeZFar;