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authorZack Rusin <[email protected]>2007-09-20 12:34:31 -0400
committerZack Rusin <[email protected]>2007-09-20 12:34:31 -0400
commit742e32a40bf5ef1bd90b23aa0f7d451b7b7f0ba3 (patch)
tree5768af08d9a2943a5eed9856dec183f0394774c4 /src/mesa/pipe/i915simple/i915_state.c
parentcc2629f5912d1c608f830ab63f6c4e0875d2fcef (diff)
Cache the i915 sampler state.
Diffstat (limited to 'src/mesa/pipe/i915simple/i915_state.c')
-rw-r--r--src/mesa/pipe/i915simple/i915_state.c129
1 files changed, 126 insertions, 3 deletions
diff --git a/src/mesa/pipe/i915simple/i915_state.c b/src/mesa/pipe/i915simple/i915_state.c
index c7086c17f5a..525f8ce13a2 100644
--- a/src/mesa/pipe/i915simple/i915_state.c
+++ b/src/mesa/pipe/i915simple/i915_state.c
@@ -38,9 +38,79 @@
#include "i915_state.h"
#include "i915_state_inlines.h"
-/* None of this state is actually used for anything yet.
+
+/* The i915 (and related graphics cores) do not support GL_CLAMP. The
+ * Intel drivers for "other operating systems" implement GL_CLAMP as
+ * GL_CLAMP_TO_EDGE, so the same is done here.
*/
+static unsigned
+translate_wrap_mode(unsigned wrap)
+{
+ switch (wrap) {
+ case PIPE_TEX_WRAP_REPEAT:
+ return TEXCOORDMODE_WRAP;
+ case PIPE_TEX_WRAP_CLAMP:
+ return TEXCOORDMODE_CLAMP_EDGE; /* not quite correct */
+ case PIPE_TEX_WRAP_CLAMP_TO_EDGE:
+ return TEXCOORDMODE_CLAMP_EDGE;
+ case PIPE_TEX_WRAP_CLAMP_TO_BORDER:
+ return TEXCOORDMODE_CLAMP_BORDER;
+// case PIPE_TEX_WRAP_MIRRORED_REPEAT:
+// return TEXCOORDMODE_MIRROR;
+ default:
+ return TEXCOORDMODE_WRAP;
+ }
+}
+static unsigned translate_img_filter( unsigned filter )
+{
+ switch (filter) {
+ case PIPE_TEX_FILTER_NEAREST:
+ return FILTER_NEAREST;
+ case PIPE_TEX_FILTER_LINEAR:
+ return FILTER_LINEAR;
+ default:
+ assert(0);
+ return FILTER_NEAREST;
+ }
+}
+
+static unsigned translate_mip_filter( unsigned filter )
+{
+ switch (filter) {
+ case PIPE_TEX_MIPFILTER_NONE:
+ return MIPFILTER_NONE;
+ case PIPE_TEX_MIPFILTER_NEAREST:
+ return MIPFILTER_NEAREST;
+ case PIPE_TEX_FILTER_LINEAR:
+ return MIPFILTER_LINEAR;
+ default:
+ assert(0);
+ return MIPFILTER_NONE;
+ }
+}
+
+static unsigned translate_compare_func(unsigned func)
+{
+ switch (func) {
+ case PIPE_FUNC_NEVER:
+ case PIPE_FUNC_LESS:
+ case PIPE_FUNC_EQUAL:
+ case PIPE_FUNC_LEQUAL:
+ case PIPE_FUNC_GREATER:
+ case PIPE_FUNC_NOTEQUAL:
+ case PIPE_FUNC_GEQUAL:
+ case PIPE_FUNC_ALWAYS:
+ return 0;
+ default:
+ assert(0);
+ return 0;
+ }
+}
+
+
+/* None of this state is actually used for anything yet.
+ */
static void *
i915_create_blend_state(struct pipe_context *pipe,
const struct pipe_blend_state *blend)
@@ -147,7 +217,59 @@ static void *
i915_create_sampler_state(struct pipe_context *pipe,
const struct pipe_sampler_state *sampler)
{
- return 0;
+ struct i915_sampler_state *cso = calloc(1, sizeof(struct i915_sampler_state));
+ cso->templ = sampler;
+
+ const unsigned ws = sampler->wrap_s;
+ const unsigned wt = sampler->wrap_t;
+ const unsigned wr = sampler->wrap_r;
+ unsigned minFilt, magFilt;
+ unsigned mipFilt;
+
+ mipFilt = translate_mip_filter(sampler->min_mip_filter);
+ if (sampler->max_anisotropy > 1.0) {
+ minFilt = FILTER_ANISOTROPIC;
+ magFilt = FILTER_ANISOTROPIC;
+ }
+ else {
+ minFilt = translate_img_filter( sampler->min_img_filter );
+ magFilt = translate_img_filter( sampler->mag_img_filter );
+ }
+
+ {
+ int b = sampler->lod_bias * 16.0;
+ b = CLAMP(b, -256, 255);
+ cso->state[0] |= ((b << SS2_LOD_BIAS_SHIFT) & SS2_LOD_BIAS_MASK);
+ }
+
+ /* Shadow:
+ */
+ if (sampler->compare_mode == PIPE_TEX_COMPARE_R_TO_TEXTURE)
+ {
+ cso->state[0] |= (SS2_SHADOW_ENABLE |
+ translate_compare_func(sampler->compare_func));
+
+ minFilt = FILTER_4X4_FLAT;
+ magFilt = FILTER_4X4_FLAT;
+ }
+
+ cso->state[0] |= ((minFilt << SS2_MIN_FILTER_SHIFT) |
+ (mipFilt << SS2_MIP_FILTER_SHIFT) |
+ (magFilt << SS2_MAG_FILTER_SHIFT));
+
+ cso->state[1] |=
+ ((translate_wrap_mode(ws) << SS3_TCX_ADDR_MODE_SHIFT) |
+ (translate_wrap_mode(wt) << SS3_TCY_ADDR_MODE_SHIFT) |
+ (translate_wrap_mode(wr) << SS3_TCZ_ADDR_MODE_SHIFT));
+
+ {
+ ubyte r = float_to_ubyte(sampler->border_color[0]);
+ ubyte g = float_to_ubyte(sampler->border_color[1]);
+ ubyte b = float_to_ubyte(sampler->border_color[2]);
+ ubyte a = float_to_ubyte(sampler->border_color[3]);
+ cso->state[2] = I915PACKCOLOR8888(r, g, b, a);
+ }
+ return cso;
}
static void i915_bind_sampler_state(struct pipe_context *pipe,
@@ -156,7 +278,7 @@ static void i915_bind_sampler_state(struct pipe_context *pipe,
struct i915_context *i915 = i915_context(pipe);
assert(unit < PIPE_MAX_SAMPLERS);
- i915->sampler[unit] = (const struct pipe_sampler_state *)sampler;
+ i915->sampler[unit] = (const struct i915_sampler_state*)sampler;
i915->dirty |= I915_NEW_SAMPLER;
}
@@ -164,6 +286,7 @@ static void i915_bind_sampler_state(struct pipe_context *pipe,
static void i915_delete_sampler_state(struct pipe_context *pipe,
void *sampler)
{
+ free(sampler);
}