static void ComputeFogValues(vec4_t fogDistanceVector, vec4_t fogDepthVector, float *eyeT)
{
// from RB_CalcFogTexCoords()
fog_t *fog;
vec3_t local;
if (!tess.fogNum)
return;
fog = tr.world->fogs + tess.fogNum;
VectorSubtract( backEnd.or.origin, backEnd.viewParms.or.origin, local );
fogDistanceVector[0] = -backEnd.or.modelMatrix[2];
fogDistanceVector[1] = -backEnd.or.modelMatrix[6];
fogDistanceVector[2] = -backEnd.or.modelMatrix[10];
fogDistanceVector[3] = DotProduct( local, backEnd.viewParms.or.axis[0] );
// scale the fog vectors based on the fog's thickness
VectorScale4(fogDistanceVector, fog->tcScale, fogDistanceVector);
// rotate the gradient vector for this orientation
if ( fog->hasSurface ) {
fogDepthVector[0] = fog->surface[0] * backEnd.or.axis[0][0] +
fog->surface[1] * backEnd.or.axis[0][1] + fog->surface[2] * backEnd.or.axis[0][2];
fogDepthVector[1] = fog->surface[0] * backEnd.or.axis[1][0] +
fog->surface[1] * backEnd.or.axis[1][1] + fog->surface[2] * backEnd.or.axis[1][2];
fogDepthVector[2] = fog->surface[0] * backEnd.or.axis[2][0] +
fog->surface[1] * backEnd.or.axis[2][1] + fog->surface[2] * backEnd.or.axis[2][2];
fogDepthVector[3] = -fog->surface[3] + DotProduct( backEnd.or.origin, fog->surface );
*eyeT = DotProduct( backEnd.or.viewOrigin, fogDepthVector ) + fogDepthVector[3];
} else {
*eyeT = 1; // non-surface fog always has eye inside
}
}
/*
==============
RB_SurfaceSprite
==============
*/
static void RB_SurfaceSprite( void ) {
vec3_t left, up;
float radius;
float colors[4];
trRefEntity_t *ent = backEnd.currentEntity;
// calculate the xyz locations for the four corners
radius = ent->e.radius;
if ( ent->e.rotation == 0 ) {
VectorScale( backEnd.viewParms.or.axis[1], radius, left );
VectorScale( backEnd.viewParms.or.axis[2], radius, up );
} else {
float s, c;
float ang;
ang = M_PI * ent->e.rotation / 180;
s = sin( ang );
c = cos( ang );
VectorScale( backEnd.viewParms.or.axis[1], c * radius, left );
VectorMA( left, -s * radius, backEnd.viewParms.or.axis[2], left );
VectorScale( backEnd.viewParms.or.axis[2], c * radius, up );
VectorMA( up, s * radius, backEnd.viewParms.or.axis[1], up );
}
if ( backEnd.viewParms.isMirror ) {
VectorSubtract( vec3_origin, left, left );
}
VectorScale4(ent->e.shaderRGBA, 1.0f / 255.0f, colors);
RB_AddQuadStamp( ent->e.origin, left, up, colors );
}
static void RB_IterateStagesGeneric( shaderCommands_t *input )
{
int stage;
vec4_t fogDistanceVector, fogDepthVector = {0, 0, 0, 0};
float eyeT = 0;
int deformGen;
vec5_t deformParams;
ComputeDeformValues(&deformGen, deformParams);
ComputeFogValues(fogDistanceVector, fogDepthVector, &eyeT);
for ( stage = 0; stage < MAX_SHADER_STAGES; stage++ )
{
shaderStage_t *pStage = input->xstages[stage];
shaderProgram_t *sp;
vec4_t texMatrix;
vec4_t texOffTurb;
if ( !pStage )
{
break;
}
if (backEnd.depthFill)
{
if (pStage->glslShaderGroup == tr.lightallShader)
{
int index = 0;
if (backEnd.currentEntity && backEnd.currentEntity != &tr.worldEntity)
{
index |= LIGHTDEF_ENTITY;
}
if (pStage->stateBits & GLS_ATEST_BITS)
{
index |= LIGHTDEF_USE_TCGEN_AND_TCMOD;
}
sp = &pStage->glslShaderGroup[index];
}
else
{
int shaderAttribs = 0;
if (tess.shader->numDeforms && !ShaderRequiresCPUDeforms(tess.shader))
{
shaderAttribs |= GENERICDEF_USE_DEFORM_VERTEXES;
}
if (glState.vertexAnimation)
{
shaderAttribs |= GENERICDEF_USE_VERTEX_ANIMATION;
}
if (pStage->stateBits & GLS_ATEST_BITS)
{
shaderAttribs |= GENERICDEF_USE_TCGEN_AND_TCMOD;
}
sp = &tr.genericShader[shaderAttribs];
}
}
else if (pStage->glslShaderGroup == tr.lightallShader)
{
int index = pStage->glslShaderIndex;
if (backEnd.currentEntity && backEnd.currentEntity != &tr.worldEntity)
{
index |= LIGHTDEF_ENTITY;
}
if (r_sunlightMode->integer && (backEnd.viewParms.flags & VPF_USESUNLIGHT) && (index & LIGHTDEF_LIGHTTYPE_MASK))
{
index |= LIGHTDEF_USE_SHADOWMAP;
}
if (r_lightmap->integer && index & LIGHTDEF_USE_LIGHTMAP)
{
index = LIGHTDEF_USE_LIGHTMAP;
}
sp = &pStage->glslShaderGroup[index];
backEnd.pc.c_lightallDraws++;
}
else
{
sp = GLSL_GetGenericShaderProgram(stage);
backEnd.pc.c_genericDraws++;
}
GLSL_BindProgram(sp);
GLSL_SetUniformMat4(sp, UNIFORM_MODELVIEWPROJECTIONMATRIX, glState.modelviewProjection);
GLSL_SetUniformVec3(sp, UNIFORM_VIEWORIGIN, backEnd.viewParms.or.origin);
GLSL_SetUniformVec3(sp, UNIFORM_LOCALVIEWORIGIN, backEnd.or.viewOrigin);
GLSL_SetUniformFloat(sp, UNIFORM_VERTEXLERP, glState.vertexAttribsInterpolation);
GLSL_SetUniformInt(sp, UNIFORM_DEFORMGEN, deformGen);
if (deformGen != DGEN_NONE)
{
GLSL_SetUniformFloat5(sp, UNIFORM_DEFORMPARAMS, deformParams);
GLSL_SetUniformFloat(sp, UNIFORM_TIME, tess.shaderTime);
}
if ( input->fogNum ) {
GLSL_SetUniformVec4(sp, UNIFORM_FOGDISTANCE, fogDistanceVector);
GLSL_SetUniformVec4(sp, UNIFORM_FOGDEPTH, fogDepthVector);
GLSL_SetUniformFloat(sp, UNIFORM_FOGEYET, eyeT);
}
GL_State( pStage->stateBits );
{
vec4_t baseColor;
vec4_t vertColor;
ComputeShaderColors(pStage, baseColor, vertColor, pStage->stateBits);
if ((backEnd.refdef.colorScale != 1.0f) && !(backEnd.refdef.rdflags & RDF_NOWORLDMODEL))
{
// use VectorScale to only scale first three values, not alpha
VectorScale(baseColor, backEnd.refdef.colorScale, baseColor);
VectorScale(vertColor, backEnd.refdef.colorScale, vertColor);
}
GLSL_SetUniformVec4(sp, UNIFORM_BASECOLOR, baseColor);
GLSL_SetUniformVec4(sp, UNIFORM_VERTCOLOR, vertColor);
}
if (pStage->rgbGen == CGEN_LIGHTING_DIFFUSE)
{
vec4_t vec;
VectorScale(backEnd.currentEntity->ambientLight, 1.0f / 255.0f, vec);
GLSL_SetUniformVec3(sp, UNIFORM_AMBIENTLIGHT, vec);
VectorScale(backEnd.currentEntity->directedLight, 1.0f / 255.0f, vec);
GLSL_SetUniformVec3(sp, UNIFORM_DIRECTEDLIGHT, vec);
VectorCopy(backEnd.currentEntity->lightDir, vec);
vec[3] = 0.0f;
GLSL_SetUniformVec4(sp, UNIFORM_LIGHTORIGIN, vec);
GLSL_SetUniformVec3(sp, UNIFORM_MODELLIGHTDIR, backEnd.currentEntity->modelLightDir);
GLSL_SetUniformFloat(sp, UNIFORM_LIGHTRADIUS, 0.0f);
}
if (pStage->alphaGen == AGEN_PORTAL)
{
GLSL_SetUniformFloat(sp, UNIFORM_PORTALRANGE, tess.shader->portalRange);
}
GLSL_SetUniformInt(sp, UNIFORM_COLORGEN, pStage->rgbGen);
GLSL_SetUniformInt(sp, UNIFORM_ALPHAGEN, pStage->alphaGen);
if ( input->fogNum )
{
vec4_t fogColorMask;
ComputeFogColorMask(pStage, fogColorMask);
GLSL_SetUniformVec4(sp, UNIFORM_FOGCOLORMASK, fogColorMask);
}
ComputeTexMods( pStage, TB_DIFFUSEMAP, texMatrix, texOffTurb );
GLSL_SetUniformVec4(sp, UNIFORM_DIFFUSETEXMATRIX, texMatrix);
GLSL_SetUniformVec4(sp, UNIFORM_DIFFUSETEXOFFTURB, texOffTurb);
GLSL_SetUniformInt(sp, UNIFORM_TCGEN0, pStage->bundle[0].tcGen);
if (pStage->bundle[0].tcGen == TCGEN_VECTOR)
{
vec3_t vec;
VectorCopy(pStage->bundle[0].tcGenVectors[0], vec);
GLSL_SetUniformVec3(sp, UNIFORM_TCGEN0VECTOR0, vec);
VectorCopy(pStage->bundle[0].tcGenVectors[1], vec);
GLSL_SetUniformVec3(sp, UNIFORM_TCGEN0VECTOR1, vec);
}
GLSL_SetUniformMat4(sp, UNIFORM_MODELMATRIX, backEnd.or.transformMatrix);
GLSL_SetUniformVec4(sp, UNIFORM_NORMALSCALE, pStage->normalScale);
GLSL_SetUniformVec4(sp, UNIFORM_SPECULARSCALE, pStage->specularScale);
//GLSL_SetUniformFloat(sp, UNIFORM_MAPLIGHTSCALE, backEnd.refdef.mapLightScale);
//
// do multitexture
//
if ( backEnd.depthFill )
{
if (!(pStage->stateBits & GLS_ATEST_BITS))
GL_BindToTMU( tr.whiteImage, 0 );
else if ( pStage->bundle[TB_COLORMAP].image[0] != 0 )
R_BindAnimatedImageToTMU( &pStage->bundle[TB_COLORMAP], TB_COLORMAP );
}
else if ( pStage->glslShaderGroup == tr.lightallShader )
{
int i;
vec4_t enableTextures;
if (r_sunlightMode->integer && (backEnd.viewParms.flags & VPF_USESUNLIGHT) && (pStage->glslShaderIndex & LIGHTDEF_LIGHTTYPE_MASK))
{
GL_BindToTMU(tr.screenShadowImage, TB_SHADOWMAP);
GLSL_SetUniformVec3(sp, UNIFORM_PRIMARYLIGHTAMBIENT, backEnd.refdef.sunAmbCol);
GLSL_SetUniformVec3(sp, UNIFORM_PRIMARYLIGHTCOLOR, backEnd.refdef.sunCol);
GLSL_SetUniformVec4(sp, UNIFORM_PRIMARYLIGHTORIGIN, backEnd.refdef.sunDir);
}
VectorSet4(enableTextures, 0, 0, 0, 0);
if ((r_lightmap->integer == 1 || r_lightmap->integer == 2) && pStage->bundle[TB_LIGHTMAP].image[0])
{
for (i = 0; i < NUM_TEXTURE_BUNDLES; i++)
{
if (i == TB_LIGHTMAP)
R_BindAnimatedImageToTMU( &pStage->bundle[TB_LIGHTMAP], i);
else
GL_BindToTMU( tr.whiteImage, i );
}
}
else if (r_lightmap->integer == 3 && pStage->bundle[TB_DELUXEMAP].image[0])
{
for (i = 0; i < NUM_TEXTURE_BUNDLES; i++)
{
if (i == TB_LIGHTMAP)
R_BindAnimatedImageToTMU( &pStage->bundle[TB_DELUXEMAP], i);
else
GL_BindToTMU( tr.whiteImage, i );
}
}
else
{
qboolean light = (pStage->glslShaderIndex & LIGHTDEF_LIGHTTYPE_MASK) != 0;
qboolean fastLight = !(r_normalMapping->integer || r_specularMapping->integer);
if (pStage->bundle[TB_DIFFUSEMAP].image[0])
R_BindAnimatedImageToTMU( &pStage->bundle[TB_DIFFUSEMAP], TB_DIFFUSEMAP);
if (pStage->bundle[TB_LIGHTMAP].image[0])
R_BindAnimatedImageToTMU( &pStage->bundle[TB_LIGHTMAP], TB_LIGHTMAP);
// bind textures that are sampled and used in the glsl shader, and
// bind whiteImage to textures that are sampled but zeroed in the glsl shader
//
// alternatives:
// - use the last bound texture
// -> costs more to sample a higher res texture then throw out the result
// - disable texture sampling in glsl shader with #ifdefs, as before
// -> increases the number of shaders that must be compiled
//
if (light && !fastLight)
{
if (pStage->bundle[TB_NORMALMAP].image[0])
{
R_BindAnimatedImageToTMU( &pStage->bundle[TB_NORMALMAP], TB_NORMALMAP);
enableTextures[0] = 1.0f;
}
else if (r_normalMapping->integer)
GL_BindToTMU( tr.whiteImage, TB_NORMALMAP );
if (pStage->bundle[TB_DELUXEMAP].image[0])
{
R_BindAnimatedImageToTMU( &pStage->bundle[TB_DELUXEMAP], TB_DELUXEMAP);
enableTextures[1] = 1.0f;
}
else if (r_deluxeMapping->integer)
GL_BindToTMU( tr.whiteImage, TB_DELUXEMAP );
if (pStage->bundle[TB_SPECULARMAP].image[0])
{
R_BindAnimatedImageToTMU( &pStage->bundle[TB_SPECULARMAP], TB_SPECULARMAP);
enableTextures[2] = 1.0f;
}
else if (r_specularMapping->integer)
GL_BindToTMU( tr.whiteImage, TB_SPECULARMAP );
}
enableTextures[3] = (r_cubeMapping->integer && !(tr.viewParms.flags & VPF_NOCUBEMAPS) && input->cubemapIndex) ? 1.0f : 0.0f;
}
GLSL_SetUniformVec4(sp, UNIFORM_ENABLETEXTURES, enableTextures);
}
else if ( pStage->bundle[1].image[0] != 0 )
{
R_BindAnimatedImageToTMU( &pStage->bundle[0], 0 );
R_BindAnimatedImageToTMU( &pStage->bundle[1], 1 );
}
else
{
//
// set state
//
R_BindAnimatedImageToTMU( &pStage->bundle[0], 0 );
}
//
// testing cube map
//
if (!(tr.viewParms.flags & VPF_NOCUBEMAPS) && input->cubemapIndex && r_cubeMapping->integer)
{
vec4_t vec;
GL_BindToTMU( tr.cubemaps[input->cubemapIndex - 1], TB_CUBEMAP);
vec[0] = tr.cubemapOrigins[input->cubemapIndex - 1][0] - backEnd.viewParms.or.origin[0];
vec[1] = tr.cubemapOrigins[input->cubemapIndex - 1][1] - backEnd.viewParms.or.origin[1];
vec[2] = tr.cubemapOrigins[input->cubemapIndex - 1][2] - backEnd.viewParms.or.origin[2];
vec[3] = 1.0f;
VectorScale4(vec, 1.0f / 1000.0f, vec);
GLSL_SetUniformVec4(sp, UNIFORM_CUBEMAPINFO, vec);
}
//
// draw
//
if (input->multiDrawPrimitives)
{
R_DrawMultiElementsVao(input->multiDrawPrimitives, input->multiDrawMinIndex, input->multiDrawMaxIndex, input->multiDrawNumIndexes, input->multiDrawFirstIndex);
}
else
{
R_DrawElementsVao(input->numIndexes, input->firstIndex, input->minIndex, input->maxIndex);
}
// allow skipping out to show just lightmaps during development
if ( r_lightmap->integer && ( pStage->bundle[0].isLightmap || pStage->bundle[1].isLightmap ) )
{
break;
}
if (backEnd.depthFill)
break;
}
}
/*
=============
RB_StretchPic
=============
*/
const void *RB_StretchPic ( const void *data ) {
const stretchPicCommand_t *cmd;
shader_t *shader;
int numVerts, numIndexes;
cmd = (const stretchPicCommand_t *)data;
// FIXME: HUGE hack
if (glRefConfig.framebufferObject)
{
if (!tr.renderFbo || backEnd.framePostProcessed)
{
FBO_Bind(NULL);
}
else
{
FBO_Bind(tr.renderFbo);
}
}
RB_SetGL2D();
shader = cmd->shader;
if ( shader != tess.shader ) {
if ( tess.numIndexes ) {
RB_EndSurface();
}
backEnd.currentEntity = &backEnd.entity2D;
RB_BeginSurface( shader, 0, 0 );
}
RB_CHECKOVERFLOW( 4, 6 );
numVerts = tess.numVertexes;
numIndexes = tess.numIndexes;
tess.numVertexes += 4;
tess.numIndexes += 6;
tess.indexes[ numIndexes ] = numVerts + 3;
tess.indexes[ numIndexes + 1 ] = numVerts + 0;
tess.indexes[ numIndexes + 2 ] = numVerts + 2;
tess.indexes[ numIndexes + 3 ] = numVerts + 2;
tess.indexes[ numIndexes + 4 ] = numVerts + 0;
tess.indexes[ numIndexes + 5 ] = numVerts + 1;
{
vec4_t color;
VectorScale4(backEnd.color2D, 1.0f / 255.0f, color);
VectorCopy4(color, tess.vertexColors[ numVerts ]);
VectorCopy4(color, tess.vertexColors[ numVerts + 1]);
VectorCopy4(color, tess.vertexColors[ numVerts + 2]);
VectorCopy4(color, tess.vertexColors[ numVerts + 3 ]);
}
tess.xyz[ numVerts ][0] = cmd->x;
tess.xyz[ numVerts ][1] = cmd->y;
tess.xyz[ numVerts ][2] = 0;
tess.texCoords[ numVerts ][0][0] = cmd->s1;
tess.texCoords[ numVerts ][0][1] = cmd->t1;
tess.xyz[ numVerts + 1 ][0] = cmd->x + cmd->w;
tess.xyz[ numVerts + 1 ][1] = cmd->y;
tess.xyz[ numVerts + 1 ][2] = 0;
tess.texCoords[ numVerts + 1 ][0][0] = cmd->s2;
tess.texCoords[ numVerts + 1 ][0][1] = cmd->t1;
tess.xyz[ numVerts + 2 ][0] = cmd->x + cmd->w;
tess.xyz[ numVerts + 2 ][1] = cmd->y + cmd->h;
tess.xyz[ numVerts + 2 ][2] = 0;
tess.texCoords[ numVerts + 2 ][0][0] = cmd->s2;
tess.texCoords[ numVerts + 2 ][0][1] = cmd->t2;
tess.xyz[ numVerts + 3 ][0] = cmd->x;
tess.xyz[ numVerts + 3 ][1] = cmd->y + cmd->h;
tess.xyz[ numVerts + 3 ][2] = 0;
tess.texCoords[ numVerts + 3 ][0][0] = cmd->s1;
tess.texCoords[ numVerts + 3 ][0][1] = cmd->t2;
return (const void *)(cmd + 1);
}