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Check that we don't try to reference more than one target of a texture unit.

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For example, referencing both "texture[0], 2D" and "texture[0], CUBE" in one
program is an error.
This commit is contained in:
Brian Paul
2006-08-30 23:38:03 +00:00
parent f6de865e56
commit b7fc1c32f8
1 changed files with 17 additions and 1 deletions
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18
src/mesa/shader/arbprogparse.c
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@@ -2643,6 +2643,10 @@ parse_fp_vector_src_reg(GLcontext * ctx, GLubyte ** inst,
}
/**
* Parse fragment program destination register.
* \return 1 if error, 0 if no error.
*/
static GLuint
parse_fp_dst_reg(GLcontext * ctx, GLubyte ** inst,
struct var_cache **vc_head, struct arb_program *Program,
@@ -2666,6 +2670,7 @@ parse_fp_dst_reg(GLcontext * ctx, GLubyte ** inst,
/**
* Parse fragment program scalar src register.
* \return 1 if error, 0 if no error.
*/
static GLuint
parse_fp_scalar_src_reg (GLcontext * ctx, GLubyte ** inst,
@@ -2703,6 +2708,7 @@ parse_fp_scalar_src_reg (GLcontext * ctx, GLubyte ** inst,
/**
* This is a big mother that handles getting opcodes into the instruction
* and handling the src & dst registers for fragment program instructions
* \return 1 if error, 0 if no error
*/
static GLuint
parse_fp_instruction (GLcontext * ctx, GLubyte ** inst,
@@ -3051,7 +3057,14 @@ parse_fp_instruction (GLcontext * ctx, GLubyte ** inst,
/* TODO ARB_fragment_program_shadow code */
break;
}
Program->TexturesUsed[texcoord] |= (1<<fp->TexSrcTarget);
Program->TexturesUsed[texcoord] |= (1 << fp->TexSrcTarget);
/* Check that both "2D" and "CUBE" (for example) aren't both used */
if (_mesa_bitcount(Program->TexturesUsed[texcoord]) > 1) {
char *msg = "multiple targets used on one texture image unit";
_mesa_set_program_error(ctx, Program->Position, msg);
_mesa_error(ctx, GL_INVALID_OPERATION, msg);
return 1;
}
break;
case OP_TEX_KIL:
@@ -3060,6 +3073,9 @@ parse_fp_instruction (GLcontext * ctx, GLubyte ** inst,
return 1;
fp->Opcode = OPCODE_KIL;
break;
default:
_mesa_problem(ctx, "bad type 0x%x in parse_fp_instruction()", type);
return 1;
}
return 0;