Miscellany

diff --git a/src/mesa/drivers/dri/r300/r300_fragprog.c b/src/mesa/drivers/dri/r300/r300_fragprog.cindex 4ef7f2b..33e2680 100644--- a/src/mesa/drivers/dri/r300/r300_fragprog.c+++ b/src/mesa/drivers/dri/r300/r300_fragprog.c@@ -259,7 +259,7 @@ static void insert_WPOS_trailer(struct r300_fragment_program_compiler *compiler) { 	GLuint InputsRead = compiler->fp->mesa_program.Base.InputsRead; -	if (!(InputsRead & FRAG_BIT_WPOS))+	if (!(InputsRead & (FRAG_BIT_WPOS | FRAG_BIT_FOGC))) 		return;  	static gl_state_index tokens[STATE_LENGTH] = {@@ -269,8 +269,9 @@ static void insert_WPOS_trailer(struct r300_fragment_program_compiler *compiler) 	GLuint window_index; 	int i = 0; 	GLuint tempregi = _mesa_find_free_register(compiler->program, PROGRAM_TEMPORARY);+	GLuint tempregf = _mesa_find_free_register(compiler->program, PROGRAM_TEMPORARY); -	_mesa_insert_instructions(compiler->program, 0, 3);+	_mesa_insert_instructions(compiler->program, 0, 4); 	fpi = compiler->program->Instructions;  	/* perspective divide */@@ -328,6 +329,18 @@ static void insert_WPOS_trailer(struct r300_fragment_program_compiler *compiler) 	    MAKE_SWIZZLE4(SWIZZLE_X, SWIZZLE_Y, SWIZZLE_Z, SWIZZLE_ZERO); 	i++; +	fpi[i].Opcode = OPCODE_MOV;++	fpi[i].DstReg.File = PROGRAM_TEMPORARY;+	fpi[i].DstReg.Index = tempregf;+	fpi[i].DstReg.WriteMask = WRITEMASK_XYZW;+	fpi[i].DstReg.CondMask = COND_TR;++	fpi[i].SrcReg[0].File = PROGRAM_TEMPORARY;+	fpi[i].SrcReg[0].Index = tempregi;+	fpi[i].SrcReg[0].Swizzle =+			MAKE_SWIZZLE4(SWIZZLE_Z, SWIZZLE_ZERO, SWIZZLE_ZERO, SWIZZLE_ONE);+ 	for (; i < compiler->program->NumInstructions; ++i) { 		int reg; 		for (reg = 0; reg < 3; reg++) {@@ -335,6 +348,10 @@ static void insert_WPOS_trailer(struct r300_fragment_program_compiler *compiler) 			    fpi[i].SrcReg[reg].Index == FRAG_ATTRIB_WPOS) { 				fpi[i].SrcReg[reg].File = PROGRAM_TEMPORARY; 				fpi[i].SrcReg[reg].Index = tempregi;+			} else if (fpi[i].SrcReg[reg].File == PROGRAM_INPUT+			&& fpi[i].SrcReg[reg].Index == FRAG_ATTRIB_FOGC) {+				fpi[i].SrcReg[reg].File = PROGRAM_TEMPORARY;+				fpi[i].SrcReg[reg].Index = tempregf; 			} 		} 	}diff --git a/src/mesa/drivers/dri/r300/r300_state.c b/src/mesa/drivers/dri/r300/r300_state.cindex 6a5c363..b2b5737 100644--- a/src/mesa/drivers/dri/r300/r300_state.c+++ b/src/mesa/drivers/dri/r300/r300_state.c@@ -1643,6 +1643,11 @@ static void r300SetupRSUnit(GLcontext * ctx)  	r300->hw.rr.cmd[R300_RR_INST_1] = 0; +	if (InputsRead & FRAG_BIT_FOGC) {+		InputsRead |= FRAG_BIT_WPOS;+		InputsRead &= ~FRAG_BIT_FOGC;+	}+ 	if (InputsRead & FRAG_BIT_WPOS) { 		for (i = 0; i < ctx->Const.MaxTextureUnits; i++) 			if (!(InputsRead & (FRAG_BIT_TEX0 << i)))@@ -2619,7 +2624,7 @@ static void r500SetupPixelShader(r300ContextPtr rmesa) 		return; 	} 	code = &fp->code;-+#if 0 	if (fp->mesa_program.FogOption != GL_NONE) { 		/* Enable HW fog. Try not to squish GL context. 		 * (Anybody sane remembered to set glFog() opts first!) */@@ -2629,7 +2634,7 @@ static void r500SetupPixelShader(r300ContextPtr rmesa) 	} else 		/* Make sure HW is matching GL context. */ 		r300SetFogState(ctx, ctx->Fog.Enabled);-+#endif 	r300SetupTextures(ctx);  	R300_STATECHANGE(rmesa, fp);diff --git a/src/mesa/drivers/dri/r300/r300_vertprog.c b/src/mesa/drivers/dri/r300/r300_vertprog.cindex c4e325e..392397b 100644--- a/src/mesa/drivers/dri/r300/r300_vertprog.c+++ b/src/mesa/drivers/dri/r300/r300_vertprog.c@@ -1431,7 +1431,7 @@ void r300SelectVertexShader(r300ContextPtr r300) 	InputsRead = ctx->FragmentProgram._Current->Base.InputsRead;  	wpos_idx = -1;-	if (InputsRead & FRAG_BIT_WPOS) {+	if (InputsRead & (FRAG_BIT_WPOS | FRAG_BIT_FOGC)) { 		for (i = 0; i < ctx->Const.MaxTextureUnits; i++) 			if (!(InputsRead & (FRAG_BIT_TEX0 << i))) 				break;diff --git a/src/mesa/drivers/dri/r300/radeon_program_pair.c b/src/mesa/drivers/dri/r300/radeon_program_pair.cindex 5ad50d2..30b3272 100644--- a/src/mesa/drivers/dri/r300/radeon_program_pair.c+++ b/src/mesa/drivers/dri/r300/radeon_program_pair.c@@ -473,6 +473,10 @@ static void allocate_input_registers(struct pair_state *s) 		alloc_hw_reg(s, PROGRAM_INPUT, FRAG_ATTRIB_COL1, hwindex++); 	InputsRead &= ~FRAG_BIT_COL1; +	/* Fog coordinate */+	if (InputsRead & FRAG_BIT_FOGC)+		InputsRead &= ~FRAG_BIT_FOGC;+ 	/* Anything else */ 	if (InputsRead) 		error("Don't know how to handle inputs 0x%x\n", InputsRead);