/*
================
RB_SetGL2D
================
*/
void RB_SetGL2D (void) {
mat4_t matrix;
int width, height;
if (backEnd.projection2D && backEnd.last2DFBO == glState.currentFBO)
return;
backEnd.projection2D = qtrue;
backEnd.last2DFBO = glState.currentFBO;
if (glState.currentFBO)
{
width = glState.currentFBO->width;
height = glState.currentFBO->height;
}
else
{
width = glConfig.vidWidth;
height = glConfig.vidHeight;
}
// set 2D virtual screen size
qglViewport( 0, 0, width, height );
qglScissor( 0, 0, width, height );
Mat4Ortho(0, width, height, 0, 0, 1, matrix);
GL_SetProjectionMatrix(matrix);
Mat4Identity(matrix);
GL_SetModelviewMatrix(matrix);
GL_State( GLS_DEPTHTEST_DISABLE |
GLS_SRCBLEND_SRC_ALPHA |
GLS_DSTBLEND_ONE_MINUS_SRC_ALPHA );
qglDisable( GL_CULL_FACE );
qglDisable( GL_CLIP_PLANE0 );
// set time for 2D shaders
backEnd.refdef.time = ri.Milliseconds();
backEnd.refdef.floatTime = backEnd.refdef.time * 0.001f;
// reset color scaling
backEnd.refdef.colorScale = 1.0f;
}
/*
==================
RB_RenderFlares
Because flares are simulating an occular effect, they should be drawn after
everything (all views) in the entire frame has been drawn.
Because of the way portals use the depth buffer to mark off areas, the
needed information would be lost after each view, so we are forced to draw
flares after each view.
The resulting artifact is that flares in mirrors or portals don't dim properly
when occluded by something in the main view, and portal flares that should
extend past the portal edge will be overwritten.
==================
*/
void RB_RenderFlares (void) {
flare_t *f;
flare_t **prev;
qboolean draw;
mat4_t oldmodelview, oldprojection, matrix;
if ( !r_flares->integer ) {
return;
}
if(r_flareCoeff->modified)
{
R_SetFlareCoeff();
r_flareCoeff->modified = qfalse;
}
// Reset currentEntity to world so that any previously referenced entities
// don't have influence on the rendering of these flares (i.e. RF_ renderer flags).
backEnd.currentEntity = &tr.worldEntity;
backEnd.or = backEnd.viewParms.world;
// (SA) turned light flares back on. must evaluate problem id had with this
RB_AddDlightFlares();
RB_AddCoronaFlares();
// perform z buffer readback on each flare in this view
draw = qfalse;
prev = &r_activeFlares;
while ( ( f = *prev ) != NULL ) {
// throw out any flares that weren't added last frame
if ( f->addedFrame < backEnd.viewParms.frameCount - 1 ) {
*prev = f->next;
f->next = r_inactiveFlares;
r_inactiveFlares = f;
continue;
}
// don't draw any here that aren't from this scene / portal
f->drawIntensity = 0;
if ( f->frameSceneNum == backEnd.viewParms.frameSceneNum
&& f->inPortal == backEnd.viewParms.isPortal ) {
RB_TestFlare( f );
if ( f->drawIntensity ) {
draw = qtrue;
} else {
// this flare has completely faded out, so remove it from the chain
*prev = f->next;
f->next = r_inactiveFlares;
r_inactiveFlares = f;
continue;
}
}
prev = &f->next;
}
if ( !draw ) {
return; // none visible
}
if ( backEnd.viewParms.isPortal ) {
qglDisable (GL_CLIP_PLANE0);
}
Mat4Copy(glState.projection, oldprojection);
Mat4Copy(glState.modelview, oldmodelview);
Mat4Identity(matrix);
GL_SetModelviewMatrix(matrix);
Mat4Ortho( backEnd.viewParms.viewportX, backEnd.viewParms.viewportX + backEnd.viewParms.viewportWidth,
backEnd.viewParms.viewportY, backEnd.viewParms.viewportY + backEnd.viewParms.viewportHeight,
-99999, 99999, matrix );
GL_SetProjectionMatrix(matrix);
for ( f = r_activeFlares ; f ; f = f->next ) {
if ( f->frameSceneNum == backEnd.viewParms.frameSceneNum
&& f->inPortal == backEnd.viewParms.isPortal
&& f->drawIntensity ) {
RB_RenderFlare( f );
}
}
GL_SetProjectionMatrix(oldprojection);
GL_SetModelviewMatrix(oldmodelview);
}
void FBO_BlitFromTexture(struct image_s *src, ivec4_t inSrcBox, vec2_t inSrcTexScale, FBO_t *dst, ivec4_t inDstBox, struct shaderProgram_s *shaderProgram, vec4_t inColor, int blend)
{
ivec4_t dstBox, srcBox;
vec2_t srcTexScale;
vec4_t color;
vec4_t quadVerts[4];
vec2_t texCoords[4];
vec2_t invTexRes;
FBO_t *oldFbo = glState.currentFBO;
mat4_t projection;
int width, height;
if (!src)
return;
if (inSrcBox)
{
VectorSet4(srcBox, inSrcBox[0], inSrcBox[1], inSrcBox[0] + inSrcBox[2], inSrcBox[1] + inSrcBox[3]);
}
else
{
VectorSet4(srcBox, 0, 0, src->width, src->height);
}
// framebuffers are 0 bottom, Y up.
if (inDstBox)
{
if (dst)
{
dstBox[0] = inDstBox[0];
dstBox[1] = dst->height - inDstBox[1] - inDstBox[3];
dstBox[2] = inDstBox[0] + inDstBox[2];
dstBox[3] = dst->height - inDstBox[1];
}
else
{
dstBox[0] = inDstBox[0];
dstBox[1] = glConfig.vidHeight - inDstBox[1] - inDstBox[3];
dstBox[2] = inDstBox[0] + inDstBox[2];
dstBox[3] = glConfig.vidHeight - inDstBox[1];
}
}
else if (dst)
{
VectorSet4(dstBox, 0, dst->height, dst->width, 0);
}
else
{
VectorSet4(dstBox, 0, glConfig.vidHeight, glConfig.vidWidth, 0);
}
if (inSrcTexScale)
{
VectorCopy2(inSrcTexScale, srcTexScale);
}
else
{
srcTexScale[0] = srcTexScale[1] = 1.0f;
}
if (inColor)
{
VectorCopy4(inColor, color);
}
else
{
VectorCopy4(colorWhite, color);
}
if (!shaderProgram)
{
shaderProgram = &tr.textureColorShader;
}
FBO_Bind(dst);
if (glState.currentFBO)
{
width = glState.currentFBO->width;
height = glState.currentFBO->height;
}
else
{
width = glConfig.vidWidth;
height = glConfig.vidHeight;
}
qglViewport( 0, 0, width, height );
qglScissor( 0, 0, width, height );
Mat4Ortho(0, width, height, 0, 0, 1, projection);
qglDisable( GL_CULL_FACE );
GL_BindToTMU(src, TB_COLORMAP);
VectorSet4(quadVerts[0], dstBox[0], dstBox[1], 0, 1);
VectorSet4(quadVerts[1], dstBox[2], dstBox[1], 0, 1);
VectorSet4(quadVerts[2], dstBox[2], dstBox[3], 0, 1);
VectorSet4(quadVerts[3], dstBox[0], dstBox[3], 0, 1);
texCoords[0][0] = srcBox[0] / (float)src->width; texCoords[0][1] = 1.0f - srcBox[1] / (float)src->height;
texCoords[1][0] = srcBox[2] / (float)src->width; texCoords[1][1] = 1.0f - srcBox[1] / (float)src->height;
texCoords[2][0] = srcBox[2] / (float)src->width; texCoords[2][1] = 1.0f - srcBox[3] / (float)src->height;
texCoords[3][0] = srcBox[0] / (float)src->width; texCoords[3][1] = 1.0f - srcBox[3] / (float)src->height;
invTexRes[0] = 1.0f / src->width * srcTexScale[0];
invTexRes[1] = 1.0f / src->height * srcTexScale[1];
GL_State( blend );
GLSL_BindProgram(shaderProgram);
GLSL_SetUniformMat4(shaderProgram, UNIFORM_MODELVIEWPROJECTIONMATRIX, projection);
GLSL_SetUniformVec4(shaderProgram, UNIFORM_COLOR, color);
GLSL_SetUniformVec2(shaderProgram, UNIFORM_INVTEXRES, invTexRes);
GLSL_SetUniformVec2(shaderProgram, UNIFORM_AUTOEXPOSUREMINMAX, tr.refdef.autoExposureMinMax);
GLSL_SetUniformVec3(shaderProgram, UNIFORM_TONEMINAVGMAXLINEAR, tr.refdef.toneMinAvgMaxLinear);
RB_InstantQuad2(quadVerts, texCoords); //, color, shaderProgram, invTexRes);
FBO_Bind(oldFbo);
}
void FBO_BlitFromTexture(struct image_s *src, vec4_t inSrcTexCorners, vec2_t inSrcTexScale, FBO_t *dst, ivec4_t inDstBox, struct shaderProgram_s *shaderProgram, vec4_t inColor, int blend)
{
ivec4_t dstBox;
vec4_t color;
vec4_t quadVerts[4];
vec2_t texCoords[4];
vec2_t invTexRes;
FBO_t *oldFbo = glState.currentFBO;
mat4_t projection;
int width, height;
if (!src)
{
ri.Printf(PRINT_WARNING, "Tried to blit from a NULL texture!\n");
return;
}
width = dst ? dst->width : glConfig.vidWidth;
height = dst ? dst->height : glConfig.vidHeight;
if (inSrcTexCorners)
{
VectorSet2(texCoords[0], inSrcTexCorners[0], inSrcTexCorners[1]);
VectorSet2(texCoords[1], inSrcTexCorners[2], inSrcTexCorners[1]);
VectorSet2(texCoords[2], inSrcTexCorners[2], inSrcTexCorners[3]);
VectorSet2(texCoords[3], inSrcTexCorners[0], inSrcTexCorners[3]);
}
else
{
VectorSet2(texCoords[0], 0.0f, 1.0f);
VectorSet2(texCoords[1], 1.0f, 1.0f);
VectorSet2(texCoords[2], 1.0f, 0.0f);
VectorSet2(texCoords[3], 0.0f, 0.0f);
}
// framebuffers are 0 bottom, Y up.
if (inDstBox)
{
dstBox[0] = inDstBox[0];
dstBox[1] = height - inDstBox[1] - inDstBox[3];
dstBox[2] = inDstBox[0] + inDstBox[2];
dstBox[3] = height - inDstBox[1];
}
else
{
VectorSet4(dstBox, 0, height, width, 0);
}
if (inSrcTexScale)
{
VectorCopy2(inSrcTexScale, invTexRes);
}
else
{
VectorSet2(invTexRes, 1.0f, 1.0f);
}
if (inColor)
{
VectorCopy4(inColor, color);
}
else
{
VectorCopy4(colorWhite, color);
}
if (!shaderProgram)
{
shaderProgram = &tr.textureColorShader;
}
FBO_Bind(dst);
qglViewport( 0, 0, width, height );
qglScissor( 0, 0, width, height );
Mat4Ortho(0, width, height, 0, 0, 1, projection);
GL_Cull( CT_TWO_SIDED );
GL_BindToTMU(src, TB_COLORMAP);
VectorSet4(quadVerts[0], dstBox[0], dstBox[1], 0.0f, 1.0f);
VectorSet4(quadVerts[1], dstBox[2], dstBox[1], 0.0f, 1.0f);
VectorSet4(quadVerts[2], dstBox[2], dstBox[3], 0.0f, 1.0f);
VectorSet4(quadVerts[3], dstBox[0], dstBox[3], 0.0f, 1.0f);
invTexRes[0] /= src->width;
invTexRes[1] /= src->height;
GL_State( blend );
GLSL_BindProgram(shaderProgram);
GLSL_SetUniformMat4(shaderProgram, UNIFORM_MODELVIEWPROJECTIONMATRIX, projection);
GLSL_SetUniformVec4(shaderProgram, UNIFORM_COLOR, color);
GLSL_SetUniformVec2(shaderProgram, UNIFORM_INVTEXRES, invTexRes);
GLSL_SetUniformVec2(shaderProgram, UNIFORM_AUTOEXPOSUREMINMAX, tr.refdef.autoExposureMinMax);
GLSL_SetUniformVec3(shaderProgram, UNIFORM_TONEMINAVGMAXLINEAR, tr.refdef.toneMinAvgMaxLinear);
RB_InstantQuad2(quadVerts, texCoords);
FBO_Bind(oldFbo);
}
