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mesa: allow _mesa_remove_output_reads() to work on fragment programs

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This commit is contained in:
Brian Paul 2008-08-12 10:00:02 -06:00
parent 0fe0dc32e4
commit 49c2ee9d99
1 changed files with 4 additions and 4 deletions
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8
src/mesa/shader/programopt.c
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@ -368,9 +368,9 @@ _mesa_count_texture_instructions(struct gl_program *prog)
/**
* Scan/rewrite program to remove reads of custom (output) registers.
* The passed type has to be either PROGRAM_VARYING or PROGRAM_OUTPUT.
* In GLSL vertex shaders, varying vars can be read and written.
* Normally, vertex varying vars are implemented as output registers.
* The passed type has to be either PROGRAM_OUTPUT or PROGRAM_VARYING
* (for vertex shaders).
* In GLSL shaders, varying vars can be read and written.
* On some hardware, trying to read an output register causes trouble.
* So, rewrite the program to use a temporary register in this case.
*/
@ -381,8 +381,8 @@ _mesa_remove_output_reads(struct gl_program *prog, enum register_file type)
GLint outputMap[VERT_RESULT_MAX];
GLuint numVaryingReads = 0;
assert(prog->Target == GL_VERTEX_PROGRAM_ARB);
assert(type == PROGRAM_VARYING || type == PROGRAM_OUTPUT);
assert(prog->Target == GL_VERTEX_PROGRAM_ARB || type != PROGRAM_VARYING);
for (i = 0; i < VERT_RESULT_MAX; i++)
outputMap[i] = -1;