i965/fs: Switch from BRW_MAX_TEX_UNIT to the actual limit.

BRW_MAX_TEX_UNIT is about to grow, but only Gen7+ will be able to
support the new larger value.  On older platforms, we don't want to
allocate the extra space - it would just be a waste.

Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Matt Turner <mattst88@gmail.com>
Reviewed-by: Chris Forbes <chrisf@ijw.co.nz>

diff --git a/src/mesa/drivers/dri/i965/brw_wm.c b/src/mesa/drivers/dri/i965/brw_wm.c
index a6b558fd6a245ee51c711bd1a6e88f942500fdd6..b7afcf28b1ec687d22d22ca5fc4a5607173f75d8 100644 (file)
--- a/src/mesa/drivers/dri/i965/brw_wm.c
+++ b/src/mesa/drivers/dri/i965/brw_wm.c
@@ -153,6 +153,7 @@ bool do_wm_prog(struct brw_context *brw,
                struct brw_fragment_program *fp,
                struct brw_wm_prog_key *key)
 {
+   struct gl_context *ctx = &brw->ctx;
    struct brw_wm_compile *c;
    const GLuint *program;
    struct gl_shader *fs = NULL;
@@ -174,7 +175,7 @@ bool do_wm_prog(struct brw_context *brw,
       param_count = fp->program.Base.Parameters->NumParameters * 4;
    }
    /* The backend also sometimes adds params for texture size. */
-   param_count += 2 * BRW_MAX_TEX_UNIT;
+   param_count += 2 * ctx->Const.Program[MESA_SHADER_FRAGMENT].MaxTextureImageUnits;
    c->prog_data.param = rzalloc_array(NULL, const float *, param_count);
    c->prog_data.pull_param = rzalloc_array(NULL, const float *, param_count);