/**
* Execute the current ATI shader program, operating on the given span.
*/
void
_swrast_exec_fragment_shader(struct gl_context * ctx, SWspan *span)
{
const struct ati_fragment_shader *shader = ctx->ATIFragmentShader.Current;
struct atifs_machine machine;
GLuint i;
/* incoming colors should be floats */
ASSERT(span->array->ChanType == GL_FLOAT);
for (i = 0; i < span->end; i++) {
if (span->array->mask[i]) {
init_machine(ctx, &machine, shader, span, i);
execute_shader(ctx, shader, &machine, span, i);
/* store result color */
{
const GLfloat *colOut = machine.Registers[0];
/*fprintf(stderr,"outputs %f %f %f %f\n",
colOut[0], colOut[1], colOut[2], colOut[3]); */
COPY_4V(span->array->attribs[FRAG_ATTRIB_COL0][i], colOut);
}
}
}
}
/**
* Execute the current fragment program, operating on the given span.
*/
void
_swrast_exec_fragment_shader(GLcontext * ctx, struct sw_span *span)
{
const struct ati_fragment_shader *shader = ctx->ATIFragmentShader.Current;
GLuint i;
ctx->_CurrentProgram = GL_FRAGMENT_SHADER_ATI;
for (i = 0; i < span->end; i++) {
if (span->array->mask[i]) {
init_machine(ctx, &ctx->ATIFragmentShader.Machine,
ctx->ATIFragmentShader.Current, span, i);
if (execute_shader(ctx, shader, ~0,
&ctx->ATIFragmentShader.Machine, span, i)) {
span->array->mask[i] = GL_FALSE;
}
{
const GLfloat *colOut =
ctx->ATIFragmentShader.Machine.Registers[0];
/*fprintf(stderr,"outputs %f %f %f %f\n", colOut[0], colOut[1], colOut[2], colOut[3]); */
UNCLAMPED_FLOAT_TO_CHAN(span->array->rgba[i][RCOMP], colOut[0]);
UNCLAMPED_FLOAT_TO_CHAN(span->array->rgba[i][GCOMP], colOut[1]);
UNCLAMPED_FLOAT_TO_CHAN(span->array->rgba[i][BCOMP], colOut[2]);
UNCLAMPED_FLOAT_TO_CHAN(span->array->rgba[i][ACOMP], colOut[3]);
}
}
}
ctx->_CurrentProgram = 0;
}