replace _mesa_logbase2 with util_logbase2
[mesa.git] / src / mesa / state_tracker / st_atom_texture.c
index 90828bb4cf94707834de32473f56ffe2238d1513..5a0f91ccb1403ee50a90cc3c88775034e9abe17b 100644 (file)
@@ -47,7 +47,7 @@
 #include "st_format.h"
 #include "st_cb_texture.h"
 #include "pipe/p_context.h"
-#include "util/u_format.h"
+#include "util/format/u_format.h"
 #include "util/u_inlines.h"
 #include "cso_cache/cso_context.h"
 
@@ -58,7 +58,8 @@
 void
 st_update_single_texture(struct st_context *st,
                          struct pipe_sampler_view **sampler_view,
-                         GLuint texUnit, bool glsl130_or_later)
+                         GLuint texUnit, bool glsl130_or_later,
+                         bool ignore_srgb_decode)
 {
    struct gl_context *ctx = st->ctx;
    const struct gl_sampler_object *samp;
@@ -90,7 +91,8 @@ st_update_single_texture(struct st_context *st,
 
    *sampler_view =
       st_get_texture_sampler_view_from_stobj(st, stObj, samp,
-                                             glsl130_or_later);
+                                             glsl130_or_later,
+                                             ignore_srgb_decode);
 }
 
 
@@ -99,11 +101,11 @@ static void
 update_textures(struct st_context *st,
                 enum pipe_shader_type shader_stage,
                 const struct gl_program *prog,
-                struct pipe_sampler_view **sampler_views,
-                unsigned *out_num_textures)
+                struct pipe_sampler_view **sampler_views)
 {
-   const GLuint old_max = *out_num_textures;
+   const GLuint old_max = st->state.num_sampler_views[shader_stage];
    GLbitfield samplers_used = prog->SamplersUsed;
+   GLbitfield texel_fetch_samplers = prog->info.textures_used_by_txf;
    GLbitfield free_slots = ~prog->SamplersUsed;
    GLbitfield external_samplers_used = prog->ExternalSamplersUsed;
    GLuint unit;
@@ -118,13 +120,41 @@ update_textures(struct st_context *st,
 
    /* loop over sampler units (aka tex image units) */
    for (unit = 0; samplers_used || unit < old_max;
-        unit++, samplers_used >>= 1) {
+        unit++, samplers_used >>= 1, texel_fetch_samplers >>= 1) {
       struct pipe_sampler_view *sampler_view = NULL;
 
       if (samplers_used & 1) {
          const GLuint texUnit = prog->SamplerUnits[unit];
 
-         st_update_single_texture(st, &sampler_view, texUnit, glsl130);
+         /* The EXT_texture_sRGB_decode extension says:
+          *
+          *    "The conversion of sRGB color space components to linear color
+          *     space is always performed if the texel lookup function is one
+          *     of the texelFetch builtin functions.
+          *
+          *     Otherwise, if the texel lookup function is one of the texture
+          *     builtin functions or one of the texture gather functions, the
+          *     conversion of sRGB color space components to linear color space
+          *     is controlled by the TEXTURE_SRGB_DECODE_EXT parameter.
+          *
+          *     If the TEXTURE_SRGB_DECODE_EXT parameter is DECODE_EXT, the
+          *     conversion of sRGB color space components to linear color space
+          *     is performed.
+          *
+          *     If the TEXTURE_SRGB_DECODE_EXT parameter is SKIP_DECODE_EXT,
+          *     the value is returned without decoding. However, if the texture
+          *     is also [statically] accessed with a texelFetch function, then
+          *     the result of texture builtin functions and/or texture gather
+          *     functions may be returned with decoding or without decoding."
+          *
+          * Note: the "statically" will be added to the language per
+          *       https://cvs.khronos.org/bugzilla/show_bug.cgi?id=14934
+          *
+          * So we simply ignore the setting entirely for samplers that are
+          * (statically) accessed with a texelFetch function.
+          */
+         st_update_single_texture(st, &sampler_view, texUnit, glsl130,
+                                  texel_fetch_samplers & 1);
          num_textures = unit + 1;
       }
 
@@ -152,6 +182,10 @@ update_textures(struct st_context *st,
       /* use original view as template: */
       tmpl = *sampler_views[unit];
 
+      /* if resource format matches then YUV wasn't lowered */
+      if (st_get_view_format(stObj) == stObj->pt->format)
+         continue;
+
       switch (st_get_view_format(stObj)) {
       case PIPE_FORMAT_NV12:
          /* we need one additional R8G8 view: */
@@ -161,6 +195,15 @@ update_textures(struct st_context *st,
          sampler_views[extra] =
                st->pipe->create_sampler_view(st->pipe, stObj->pt->next, &tmpl);
          break;
+      case PIPE_FORMAT_P010:
+      case PIPE_FORMAT_P016:
+         /* we need one additional R16G16 view: */
+         tmpl.format = PIPE_FORMAT_RG1616_UNORM;
+         tmpl.swizzle_g = PIPE_SWIZZLE_Y;   /* tmpl from Y plane is R16 */
+         extra = u_bit_scan(&free_slots);
+         sampler_views[extra] =
+               st->pipe->create_sampler_view(st->pipe, stObj->pt->next, &tmpl);
+         break;
       case PIPE_FORMAT_IYUV:
          /* we need two additional R8 views: */
          tmpl.format = PIPE_FORMAT_R8_UNORM;
@@ -171,6 +214,24 @@ update_textures(struct st_context *st,
          sampler_views[extra] =
                st->pipe->create_sampler_view(st->pipe, stObj->pt->next->next, &tmpl);
          break;
+      case PIPE_FORMAT_YUYV:
+         /* we need one additional BGRA8888 view: */
+         tmpl.format = PIPE_FORMAT_BGRA8888_UNORM;
+         tmpl.swizzle_b = PIPE_SWIZZLE_Z;
+         tmpl.swizzle_a = PIPE_SWIZZLE_W;
+         extra = u_bit_scan(&free_slots);
+         sampler_views[extra] =
+               st->pipe->create_sampler_view(st->pipe, stObj->pt->next, &tmpl);
+         break;
+      case PIPE_FORMAT_UYVY:
+         /* we need one additional RGBA8888 view: */
+         tmpl.format = PIPE_FORMAT_RGBA8888_UNORM;
+         tmpl.swizzle_b = PIPE_SWIZZLE_Z;
+         tmpl.swizzle_a = PIPE_SWIZZLE_W;
+         extra = u_bit_scan(&free_slots);
+         sampler_views[extra] =
+               st->pipe->create_sampler_view(st->pipe, stObj->pt->next, &tmpl);
+         break;
       default:
          break;
       }
@@ -182,10 +243,23 @@ update_textures(struct st_context *st,
                          shader_stage,
                          num_textures,
                          sampler_views);
-   *out_num_textures = num_textures;
+   st->state.num_sampler_views[shader_stage] = num_textures;
 }
 
+/* Same as update_textures, but don't store the views in st_context. */
+static void
+update_textures_local(struct st_context *st,
+                      enum pipe_shader_type shader_stage,
+                      const struct gl_program *prog)
+{
+   struct pipe_sampler_view *local_views[PIPE_MAX_SAMPLERS] = {0};
 
+   update_textures(st, shader_stage, prog, local_views);
+
+   unsigned num = st->state.num_sampler_views[shader_stage];
+   for (unsigned i = 0; i < num; i++)
+      pipe_sampler_view_reference(&local_views[i], NULL);
+}
 
 void
 st_update_vertex_textures(struct st_context *st)
@@ -196,8 +270,7 @@ st_update_vertex_textures(struct st_context *st)
       update_textures(st,
                       PIPE_SHADER_VERTEX,
                       ctx->VertexProgram._Current,
-                      st->state.sampler_views[PIPE_SHADER_VERTEX],
-                      &st->state.num_sampler_views[PIPE_SHADER_VERTEX]);
+                      st->state.vert_sampler_views);
    }
 }
 
@@ -210,8 +283,7 @@ st_update_fragment_textures(struct st_context *st)
    update_textures(st,
                    PIPE_SHADER_FRAGMENT,
                    ctx->FragmentProgram._Current,
-                   st->state.sampler_views[PIPE_SHADER_FRAGMENT],
-                   &st->state.num_sampler_views[PIPE_SHADER_FRAGMENT]);
+                   st->state.frag_sampler_views);
 }
 
 
@@ -221,11 +293,8 @@ st_update_geometry_textures(struct st_context *st)
    const struct gl_context *ctx = st->ctx;
 
    if (ctx->GeometryProgram._Current) {
-      update_textures(st,
-                      PIPE_SHADER_GEOMETRY,
-                      ctx->GeometryProgram._Current,
-                      st->state.sampler_views[PIPE_SHADER_GEOMETRY],
-                      &st->state.num_sampler_views[PIPE_SHADER_GEOMETRY]);
+      update_textures_local(st, PIPE_SHADER_GEOMETRY,
+                            ctx->GeometryProgram._Current);
    }
 }
 
@@ -236,11 +305,8 @@ st_update_tessctrl_textures(struct st_context *st)
    const struct gl_context *ctx = st->ctx;
 
    if (ctx->TessCtrlProgram._Current) {
-      update_textures(st,
-                      PIPE_SHADER_TESS_CTRL,
-                      ctx->TessCtrlProgram._Current,
-                      st->state.sampler_views[PIPE_SHADER_TESS_CTRL],
-                      &st->state.num_sampler_views[PIPE_SHADER_TESS_CTRL]);
+      update_textures_local(st, PIPE_SHADER_TESS_CTRL,
+                            ctx->TessCtrlProgram._Current);
    }
 }
 
@@ -251,11 +317,8 @@ st_update_tesseval_textures(struct st_context *st)
    const struct gl_context *ctx = st->ctx;
 
    if (ctx->TessEvalProgram._Current) {
-      update_textures(st,
-                      PIPE_SHADER_TESS_EVAL,
-                      ctx->TessEvalProgram._Current,
-                      st->state.sampler_views[PIPE_SHADER_TESS_EVAL],
-                      &st->state.num_sampler_views[PIPE_SHADER_TESS_EVAL]);
+      update_textures_local(st, PIPE_SHADER_TESS_EVAL,
+                            ctx->TessEvalProgram._Current);
    }
 }
 
@@ -266,10 +329,7 @@ st_update_compute_textures(struct st_context *st)
    const struct gl_context *ctx = st->ctx;
 
    if (ctx->ComputeProgram._Current) {
-      update_textures(st,
-                      PIPE_SHADER_COMPUTE,
-                      ctx->ComputeProgram._Current,
-                      st->state.sampler_views[PIPE_SHADER_COMPUTE],
-                      &st->state.num_sampler_views[PIPE_SHADER_COMPUTE]);
+      update_textures_local(st, PIPE_SHADER_COMPUTE,
+                            ctx->ComputeProgram._Current);
    }
 }