mesa: add GL_OES_copy_image support

Signed-off-by: Ilia Mirkin <imirkin@alum.mit.edu>
Reviewed-by: Dave Airlie <airlied@redhat.com>

docs/GL3.txt

@@ -256,7 +256,7 @@ GLES3.2, GLSL ES 3.2
   GL_KHR_debug                                          DONE (all drivers)
   GL_KHR_robustness                                     not started (90% done with the ARB variant)
   GL_KHR_texture_compression_astc_ldr                   DONE (i965/gen9+)
-  GL_OES_copy_image                                     not started (based on GL_ARB_copy_image, which is done for some drivers)
+  GL_OES_copy_image                                     DONE (core only)
   GL_OES_draw_buffers_indexed                           not started
   GL_OES_draw_elements_base_vertex                      DONE (all drivers)
   GL_OES_geometry_shader                                started (Marta)

src/mapi/glapi/gen/es_EXT.xml

@@ -1013,6 +1013,28 @@
 
 </category>
 
+<category name="GL_OES_copy_image" number="208">
+
+    <function name="CopyImageSubDataOES" alias="CopyImageSubData" es2="3.0">
+        <param name="srcName" type="GLuint"/>
+        <param name="srcTarget" type="GLenum"/>
+        <param name="srcLevel" type="GLint"/>
+        <param name="srcX" type="GLint"/>
+        <param name="srcY" type="GLint"/>
+        <param name="srcZ" type="GLint"/>
+        <param name="dstName" type="GLuint"/>
+        <param name="dstTarget" type="GLenum"/>
+        <param name="dstLevel" type="GLint"/>
+        <param name="dstX" type="GLint"/>
+        <param name="dstY" type="GLint"/>
+        <param name="dstZ" type="GLint"/>
+        <param name="srcWidth" type="GLsizei"/>
+        <param name="srcHeight" type="GLsizei"/>
+        <param name="srcDepth" type="GLsizei"/>
+    </function>
+
+</category>
+
 <!-- 175. GL_OES_geometry_shader -->
 <category name="GL_OES_geometry_shader" number="210">
     <enum name="GEOMETRY_SHADER_OES"                             value="0x8DD9"/>

src/mesa/main/copyimage.c

@@ -25,6 +25,7 @@
  *    Jason Ekstrand <jason.ekstrand@intel.com>
  */
 
+#include "context.h"
 #include "glheader.h"
 #include "errors.h"
 #include "enums.h"
@@ -360,8 +361,32 @@ compressed_format_compatible(const struct gl_context *ctx,
       case GL_COMPRESSED_SIGNED_RED_RGTC1:
          compressedClass = BLOCK_CLASS_64_BITS;
          break;
+      case GL_COMPRESSED_RGBA8_ETC2_EAC:
+      case GL_COMPRESSED_SRGB8_ALPHA8_ETC2_EAC:
+      case GL_COMPRESSED_RG11_EAC:
+      case GL_COMPRESSED_SIGNED_RG11_EAC:
+         if (_mesa_is_gles(ctx))
+            compressedClass = BLOCK_CLASS_128_BITS;
+         else
+            return false;
+         break;
+      case GL_COMPRESSED_RGB8_ETC2:
+      case GL_COMPRESSED_SRGB8_ETC2:
+      case GL_COMPRESSED_R11_EAC:
+      case GL_COMPRESSED_SIGNED_R11_EAC:
+      case GL_COMPRESSED_RGB8_PUNCHTHROUGH_ALPHA1_ETC2:
+      case GL_COMPRESSED_SRGB8_PUNCHTHROUGH_ALPHA1_ETC2:
+         if (_mesa_is_gles(ctx))
+            compressedClass = BLOCK_CLASS_64_BITS;
+         else
+            return false;
+         break;
       default:
-         return false;
+         if (_mesa_is_gles(ctx) && _mesa_is_astc_format(compressedFormat))
+            compressedClass = BLOCK_CLASS_128_BITS;
+         else
+            return false;
+         break;
    }
 
    switch (otherFormat) {

src/mesa/main/extensions_table.h

@@ -309,6 +309,7 @@ EXT(OES_blend_subtract                      , dummy_true
 EXT(OES_byte_coordinates                    , dummy_true                             ,  x ,  x , ES1,  x , 2002)
 EXT(OES_compressed_ETC1_RGB8_texture        , OES_compressed_ETC1_RGB8_texture       ,  x ,  x , ES1, ES2, 2005)
 EXT(OES_compressed_paletted_texture         , dummy_true                             ,  x ,  x , ES1,  x , 2003)
+EXT(OES_copy_image                          , OES_copy_image                         ,  x ,  x ,  x ,  30, 2014)
 EXT(OES_depth24                             , dummy_true                             ,  x ,  x , ES1, ES2, 2005)
 EXT(OES_depth32                             , dummy_false                            ,  x ,  x ,  x ,  x , 2005)
 EXT(OES_depth_texture                       , ARB_depth_texture                      ,  x ,  x ,  x , ES2, 2006)

src/mesa/main/mtypes.h

@@ -3911,6 +3911,7 @@ struct gl_extensions
    GLboolean EXT_transform_feedback;
    GLboolean EXT_timer_query;
    GLboolean EXT_vertex_array_bgra;
+   GLboolean OES_copy_image;
    GLboolean OES_sample_variables;
    GLboolean OES_standard_derivatives;
    GLboolean OES_texture_buffer;

src/mesa/main/tests/dispatch_sanity.cpp

@@ -2457,6 +2457,9 @@ const struct function gles3_functions_possible[] = {
    /* GL_OES_sample_shading */
    { "glMinSampleShadingOES", 30, -1 },
 
+   /* GL_OES_copy_image */
+   { "glCopyImageSubDataOES", 30, -1 },
+
    { NULL, 0, -1 }
 };
 

src/mesa/main/textureview.c

@@ -82,6 +82,39 @@
     |                       | COMPRESSED_RGB_BPTC_UNSIGNED_FLOAT              |
     ---------------------------------------------------------------------------
  */
+
+#define VIEW_CLASS_GLES(x)             (GL_VIEW_CLASS_BPTC_FLOAT + 1 + x)
+#define VIEW_CLASS_EAC_R11             VIEW_CLASS_GLES(0)
+#define VIEW_CLASS_EAC_RG11            VIEW_CLASS_GLES(1)
+#define VIEW_CLASS_ETC2_RGB            VIEW_CLASS_GLES(2)
+#define VIEW_CLASS_ETC2_RGBA           VIEW_CLASS_GLES(3)
+#define VIEW_CLASS_ETC2_EAC_RGBA       VIEW_CLASS_GLES(4)
+#define VIEW_CLASS_ASTC_4x4_RGBA       VIEW_CLASS_GLES(5)
+#define VIEW_CLASS_ASTC_5x4_RGBA       VIEW_CLASS_GLES(6)
+#define VIEW_CLASS_ASTC_5x5_RGBA       VIEW_CLASS_GLES(7)
+#define VIEW_CLASS_ASTC_6x5_RGBA       VIEW_CLASS_GLES(8)
+#define VIEW_CLASS_ASTC_6x6_RGBA       VIEW_CLASS_GLES(9)
+#define VIEW_CLASS_ASTC_8x5_RGBA       VIEW_CLASS_GLES(10)
+#define VIEW_CLASS_ASTC_8x6_RGBA       VIEW_CLASS_GLES(11)
+#define VIEW_CLASS_ASTC_8x8_RGBA       VIEW_CLASS_GLES(12)
+#define VIEW_CLASS_ASTC_10x5_RGBA      VIEW_CLASS_GLES(13)
+#define VIEW_CLASS_ASTC_10x6_RGBA      VIEW_CLASS_GLES(14)
+#define VIEW_CLASS_ASTC_10x8_RGBA      VIEW_CLASS_GLES(15)
+#define VIEW_CLASS_ASTC_10x10_RGBA     VIEW_CLASS_GLES(16)
+#define VIEW_CLASS_ASTC_12x10_RGBA     VIEW_CLASS_GLES(17)
+#define VIEW_CLASS_ASTC_12x12_RGBA     VIEW_CLASS_GLES(18)
+#define VIEW_CLASS_ASTC_3x3x3_RGBA     VIEW_CLASS_GLES(19)
+#define VIEW_CLASS_ASTC_4x3x3_RGBA     VIEW_CLASS_GLES(20)
+#define VIEW_CLASS_ASTC_4x4x3_RGBA     VIEW_CLASS_GLES(21)
+#define VIEW_CLASS_ASTC_4x4x4_RGBA     VIEW_CLASS_GLES(22)
+#define VIEW_CLASS_ASTC_5x4x4_RGBA     VIEW_CLASS_GLES(23)
+#define VIEW_CLASS_ASTC_5x5x4_RGBA     VIEW_CLASS_GLES(24)
+#define VIEW_CLASS_ASTC_5x5x5_RGBA     VIEW_CLASS_GLES(25)
+#define VIEW_CLASS_ASTC_6x5x5_RGBA     VIEW_CLASS_GLES(26)
+#define VIEW_CLASS_ASTC_6x6x5_RGBA     VIEW_CLASS_GLES(27)
+#define VIEW_CLASS_ASTC_6x6x6_RGBA     VIEW_CLASS_GLES(28)
+
+
 struct internal_format_class_info {
    GLenum view_class;
    GLenum internal_format;
@@ -162,6 +195,41 @@ static const struct internal_format_class_info s3tc_compatible_internal_formats[
    {GL_VIEW_CLASS_S3TC_DXT5_RGBA, GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT5_EXT},
 };
 
+static const struct internal_format_class_info gles_etc2_compatible_internal_formats[] = {
+   {VIEW_CLASS_EAC_R11, GL_COMPRESSED_R11_EAC},
+   {VIEW_CLASS_EAC_R11, GL_COMPRESSED_SIGNED_R11_EAC},
+   {VIEW_CLASS_EAC_RG11, GL_COMPRESSED_RG11_EAC},
+   {VIEW_CLASS_EAC_RG11, GL_COMPRESSED_SIGNED_RG11_EAC},
+   {VIEW_CLASS_ETC2_RGB, GL_COMPRESSED_RGB8_ETC2},
+   {VIEW_CLASS_ETC2_RGB, GL_COMPRESSED_SRGB8_ETC2},
+   {VIEW_CLASS_ETC2_RGBA, GL_COMPRESSED_RGB8_PUNCHTHROUGH_ALPHA1_ETC2},
+   {VIEW_CLASS_ETC2_RGBA, GL_COMPRESSED_SRGB8_PUNCHTHROUGH_ALPHA1_ETC2},
+   {VIEW_CLASS_ETC2_EAC_RGBA, GL_COMPRESSED_RGBA8_ETC2_EAC},
+   {VIEW_CLASS_ETC2_EAC_RGBA, GL_COMPRESSED_SRGB8_ALPHA8_ETC2_EAC},
+};
+
+static const struct internal_format_class_info gles_astc_compatible_internal_formats[] = {
+#define ASTC_FMT(size) \
+   {VIEW_CLASS_ASTC_##size## _RGBA, GL_COMPRESSED_RGBA_ASTC_##size##_KHR}, \
+   {VIEW_CLASS_ASTC_##size##_RGBA, GL_COMPRESSED_SRGB8_ALPHA8_ASTC_##size##_KHR}
+
+   ASTC_FMT(4x4),
+   ASTC_FMT(5x4),
+   ASTC_FMT(5x5),
+   ASTC_FMT(6x5),
+   ASTC_FMT(6x6),
+   ASTC_FMT(8x5),
+   ASTC_FMT(8x6),
+   ASTC_FMT(8x8),
+   ASTC_FMT(10x5),
+   ASTC_FMT(10x6),
+   ASTC_FMT(10x8),
+   ASTC_FMT(10x10),
+   ASTC_FMT(12x10),
+   ASTC_FMT(12x12),
+#undef ASTC_FMT
+};
+
 GLenum
 _mesa_texture_view_lookup_view_class(const struct gl_context *ctx, GLenum internalformat)
 {
@@ -180,6 +248,24 @@ _mesa_texture_view_lookup_view_class(const struct gl_context *ctx, GLenum intern
             return s3tc_compatible_internal_formats[i].view_class;
       }
    }
+
+   if (_mesa_is_gles3(ctx)) {
+      for (i = 0; i < ARRAY_SIZE(gles_etc2_compatible_internal_formats); i++) {
+         if (gles_etc2_compatible_internal_formats[i].internal_format
+             == internalformat)
+            return gles_etc2_compatible_internal_formats[i].view_class;
+      }
+
+      if (ctx->Extensions.KHR_texture_compression_astc_ldr) {
+         for (i = 0; i < ARRAY_SIZE(gles_astc_compatible_internal_formats); i++) {
+            if (gles_astc_compatible_internal_formats[i].internal_format
+                == internalformat)
+               return gles_astc_compatible_internal_formats[i].view_class;
+         }
+      }
+
+      /* FINISHME: Add 3D OES formats when supported */
+   }
    return GL_FALSE;
 }
 

src/mesa/state_tracker/st_extensions.c

@@ -927,6 +927,17 @@ void st_init_extensions(struct pipe_screen *screen,
    extensions->OES_sample_variables = extensions->ARB_sample_shading &&
       extensions->ARB_gpu_shader5;
 
+   /* If we don't have native ETC2 support, we don't keep track of the
+    * original ETC2 data. This is necessary to be able to copy images between
+    * compatible view classes.
+    */
+   if (extensions->ARB_copy_image && screen->is_format_supported(
+             screen, PIPE_FORMAT_ETC2_RGB8,
+             PIPE_TEXTURE_2D, 0,
+             PIPE_BIND_SAMPLER_VIEW)) {
+      extensions->OES_copy_image = GL_TRUE;
+   }
+
    /* Maximum sample count. */
    {
       enum pipe_format color_formats[] = {