i965/gen6+: Avoid recomputing whether we use noperspective.
Improves VS state change microbenchmark performance 2.38246% +/- 1.15046% (n=20). Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
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8387156620
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@ -1063,10 +1063,6 @@ brw_update_sol_surface(struct brw_context *brw,
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uint32_t *out_offset, unsigned num_vector_components,
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unsigned stride_dwords, unsigned offset_dwords);
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/* gen6_clip_state.c */
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bool
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brw_fprog_uses_noperspective(const struct gl_fragment_program *fprog);
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/* gen6_sol.c */
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void
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brw_begin_transform_feedback(struct gl_context *ctx, GLenum mode,
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@ -31,26 +31,6 @@
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#include "brw_util.h"
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#include "intel_batchbuffer.h"
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/**
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* Return true if at least one of the inputs used by the given fragment
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* program has the GLSL "noperspective" interpolation qualifier.
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*/
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bool
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brw_fprog_uses_noperspective(const struct gl_fragment_program *fprog)
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{
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int attr;
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for (attr = 0; attr < FRAG_ATTRIB_MAX; ++attr) {
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/* Ignore unused inputs. */
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if (!(fprog->Base.InputsRead & BITFIELD64_BIT(attr)))
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continue;
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if (fprog->InterpQualifier[attr] == INTERP_QUALIFIER_NOPERSPECTIVE)
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return true;
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}
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return false;
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}
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static void
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upload_clip_state(struct brw_context *brw)
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{
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@ -59,10 +39,10 @@ upload_clip_state(struct brw_context *brw)
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uint32_t depth_clamp = 0;
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uint32_t provoking, userclip;
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uint32_t nonperspective_barycentric_enable_flag = 0;
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/* BRW_NEW_FRAGMENT_PROGRAM */
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const struct gl_fragment_program *fprog = brw->fragment_program;
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if (brw_fprog_uses_noperspective(fprog)) {
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/* CACHE_NEW_WM_PROG */
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if (brw->wm.prog_data->barycentric_interp_modes &
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(1 << BRW_WM_NONPERSPECTIVE_PIXEL_BARYCENTRIC)) {
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nonperspective_barycentric_enable_flag =
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GEN6_CLIP_NON_PERSPECTIVE_BARYCENTRIC_ENABLE;
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}
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@ -106,9 +86,8 @@ upload_clip_state(struct brw_context *brw)
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const struct brw_tracked_state gen6_clip_state = {
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.dirty = {
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.mesa = _NEW_TRANSFORM | _NEW_LIGHT,
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.brw = (BRW_NEW_CONTEXT |
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BRW_NEW_FRAGMENT_PROGRAM),
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.cache = 0
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.brw = (BRW_NEW_CONTEXT),
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.cache = CACHE_NEW_WM_PROG
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},
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.emit = upload_clip_state,
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};
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@ -36,13 +36,13 @@ upload_clip_state(struct brw_context *brw)
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uint32_t provoking, userclip;
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uint32_t dw1 = GEN6_CLIP_STATISTICS_ENABLE;
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uint32_t nonperspective_barycentric_enable_flag = 0;
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/* BRW_NEW_FRAGMENT_PROGRAM */
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const struct gl_fragment_program *fprog = brw->fragment_program;
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/* _NEW_BUFFERS */
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bool render_to_fbo = brw->intel.ctx.DrawBuffer->Name != 0;
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if (brw_fprog_uses_noperspective(fprog)) {
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/* CACHE_NEW_WM_PROG */
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if (brw->wm.prog_data->barycentric_interp_modes &
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(1 << BRW_WM_NONPERSPECTIVE_PIXEL_BARYCENTRIC)) {
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nonperspective_barycentric_enable_flag =
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GEN6_CLIP_NON_PERSPECTIVE_BARYCENTRIC_ENABLE;
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}
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@ -115,9 +115,8 @@ const struct brw_tracked_state gen7_clip_state = {
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_NEW_POLYGON |
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_NEW_LIGHT |
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_NEW_TRANSFORM),
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.brw = (BRW_NEW_CONTEXT |
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BRW_NEW_FRAGMENT_PROGRAM),
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.cache = 0
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.brw = BRW_NEW_CONTEXT,
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.cache = CACHE_NEW_WM_PROG
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},
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.emit = upload_clip_state,
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};
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