Remove wrongly repeated words in comments
[mesa.git] / src / mesa / main / formatquery.c
index 2037e84e17b787553e78f49065e4acdbab67fafc..ad3ae56f11b5cda2237bc23b8f55e4379505b7b1 100644 (file)
 #include "fbobject.h"
 #include "formatquery.h"
 #include "teximage.h"
+#include "texparam.h"
+#include "texobj.h"
+#include "get.h"
+#include "genmipmap.h"
+#include "shaderimage.h"
+#include "texcompress.h"
+#include "textureview.h"
 
 static bool
 _is_renderable(struct gl_context *ctx, GLenum internalformat)
@@ -280,6 +287,12 @@ _set_default_response(GLenum pname, GLint buffer[16])
       break;
 
    case GL_MAX_COMBINED_DIMENSIONS:
+      /* This value can be a 64-bit value. As the default is the 32-bit query,
+       * we pack 2 32-bit integers. So we need to clean both */
+      buffer[0] = 0;
+      buffer[1] = 0;
+      break;
+
    case GL_NUM_SAMPLE_COUNTS:
    case GL_INTERNALFORMAT_RED_SIZE:
    case GL_INTERNALFORMAT_GREEN_SIZE:
@@ -546,7 +559,7 @@ _is_internalformat_supported(struct gl_context *ctx, GLenum target,
     */
    GLint buffer[1];
 
-   /* At this point a internalformat is valid if it is valid as a texture or
+   /* At this point an internalformat is valid if it is valid as a texture or
     * as a renderbuffer format. The checks are different because those methods
     * return different values when passing non supported internalformats */
    if (_mesa_base_tex_format(ctx, internalformat) < 0 &&
@@ -560,6 +573,34 @@ _is_internalformat_supported(struct gl_context *ctx, GLenum target,
    return (buffer[0] == GL_TRUE);
 }
 
+static bool
+_legal_target_for_framebuffer_texture_layer(struct gl_context *ctx,
+                                            GLenum target)
+{
+   switch (target) {
+   case GL_TEXTURE_3D:
+   case GL_TEXTURE_1D_ARRAY:
+   case GL_TEXTURE_2D_ARRAY:
+   case GL_TEXTURE_CUBE_MAP_ARRAY:
+   case GL_TEXTURE_2D_MULTISAMPLE_ARRAY:
+   case GL_TEXTURE_CUBE_MAP:
+      return true;
+   default:
+      return false;
+   }
+}
+
+static GLenum
+_mesa_generic_type_for_internal_format(GLenum internalFormat)
+{
+   if (_mesa_is_enum_format_unsigned_int(internalFormat))
+      return GL_UNSIGNED_BYTE;
+   else if (_mesa_is_enum_format_signed_int(internalFormat))
+      return GL_BYTE;
+   else
+      return GL_FLOAT;
+}
+
 /* default implementation of QueryInternalFormat driverfunc, for
  * drivers not implementing ARB_internalformat_query2.
  */
@@ -568,9 +609,7 @@ _mesa_query_internal_format_default(struct gl_context *ctx, GLenum target,
                                     GLenum internalFormat, GLenum pname,
                                     GLint *params)
 {
-   (void) ctx;
    (void) target;
-   (void) internalFormat;
 
    switch (pname) {
    case GL_SAMPLES:
@@ -586,12 +625,200 @@ _mesa_query_internal_format_default(struct gl_context *ctx, GLenum target,
       params[0] = internalFormat;
       break;
 
+   case GL_READ_PIXELS_FORMAT: {
+      GLenum base_format = _mesa_base_tex_format(ctx, internalFormat);
+      switch (base_format) {
+      case GL_STENCIL_INDEX:
+      case GL_DEPTH_COMPONENT:
+      case GL_DEPTH_STENCIL:
+      case GL_RED:
+      case GL_RGB:
+      case GL_BGR:
+      case GL_RGBA:
+      case GL_BGRA:
+         params[0] = base_format;
+         break;
+      default:
+         params[0] = GL_NONE;
+         break;
+      }
+      break;
+   }
+
+   case GL_READ_PIXELS_TYPE:
+   case GL_TEXTURE_IMAGE_TYPE:
+   case GL_GET_TEXTURE_IMAGE_TYPE: {
+      GLenum base_format = _mesa_base_tex_format(ctx, internalFormat);
+      if (base_format > 0)
+         params[0] = _mesa_generic_type_for_internal_format(internalFormat);
+      else
+         params[0] = GL_NONE;
+      break;
+   }
+
+   case GL_TEXTURE_IMAGE_FORMAT:
+   case GL_GET_TEXTURE_IMAGE_FORMAT: {
+      GLenum format = GL_NONE;
+      GLenum base_format = _mesa_base_tex_format(ctx, internalFormat);
+      if (base_format > 0) {
+         if (_mesa_is_enum_format_integer(internalFormat))
+           format = _mesa_base_format_to_integer_format(base_format);
+         else
+           format = base_format;
+      }
+
+      params[0] = format;
+      break;
+   }
+
+   case GL_MANUAL_GENERATE_MIPMAP:
+   case GL_AUTO_GENERATE_MIPMAP:
+   case GL_SRGB_READ:
+   case GL_SRGB_WRITE:
+   case GL_SRGB_DECODE_ARB:
+   case GL_VERTEX_TEXTURE:
+   case GL_TESS_CONTROL_TEXTURE:
+   case GL_TESS_EVALUATION_TEXTURE:
+   case GL_GEOMETRY_TEXTURE:
+   case GL_FRAGMENT_TEXTURE:
+   case GL_COMPUTE_TEXTURE:
+   case GL_SHADER_IMAGE_LOAD:
+   case GL_SHADER_IMAGE_STORE:
+   case GL_SHADER_IMAGE_ATOMIC:
+   case GL_SIMULTANEOUS_TEXTURE_AND_DEPTH_TEST:
+   case GL_SIMULTANEOUS_TEXTURE_AND_STENCIL_TEST:
+   case GL_SIMULTANEOUS_TEXTURE_AND_DEPTH_WRITE:
+   case GL_SIMULTANEOUS_TEXTURE_AND_STENCIL_WRITE:
+   case GL_CLEAR_BUFFER:
+   case GL_TEXTURE_VIEW:
+   case GL_TEXTURE_SHADOW:
+   case GL_TEXTURE_GATHER:
+   case GL_TEXTURE_GATHER_SHADOW:
+   case GL_FRAMEBUFFER_RENDERABLE:
+   case GL_FRAMEBUFFER_RENDERABLE_LAYERED:
+   case GL_FRAMEBUFFER_BLEND:
+   case GL_FILTER:
+      params[0] = GL_FULL_SUPPORT;
+      break;
+
    default:
       _set_default_response(pname, params);
       break;
    }
 }
 
+/*
+ * For MAX_WIDTH/MAX_HEIGHT/MAX_DEPTH it returns the equivalent GetInteger
+ * pname for a Getinternalformat pname/target combination. target/pname
+ * combinations that would return 0 due dimension number or unsupported status
+ * should be already filtered out
+ *
+ * Note that this means that the returned value would be independent of the
+ * internalformat. This possibility is already mentioned at the Issue 7 of the
+ * arb_internalformat_query2 spec.
+ */
+static GLenum
+equivalentSizePname(GLenum target,
+                    GLenum pname)
+{
+   switch (target) {
+   case GL_TEXTURE_1D:
+   case GL_TEXTURE_2D:
+   case GL_TEXTURE_2D_MULTISAMPLE:
+      return GL_MAX_TEXTURE_SIZE;
+   case GL_TEXTURE_3D:
+      return GL_MAX_3D_TEXTURE_SIZE;
+   case GL_TEXTURE_CUBE_MAP:
+      return GL_MAX_CUBE_MAP_TEXTURE_SIZE;
+   case GL_TEXTURE_RECTANGLE:
+      return GL_MAX_RECTANGLE_TEXTURE_SIZE;
+   case GL_RENDERBUFFER:
+      return GL_MAX_RENDERBUFFER_SIZE;
+   case GL_TEXTURE_1D_ARRAY:
+      if (pname == GL_MAX_HEIGHT)
+         return GL_MAX_ARRAY_TEXTURE_LAYERS;
+      else
+         return GL_MAX_TEXTURE_SIZE;
+   case GL_TEXTURE_2D_ARRAY:
+   case GL_TEXTURE_2D_MULTISAMPLE_ARRAY:
+      if (pname == GL_MAX_DEPTH)
+         return GL_MAX_ARRAY_TEXTURE_LAYERS;
+      else
+         return GL_MAX_TEXTURE_SIZE;
+   case GL_TEXTURE_CUBE_MAP_ARRAY:
+      if (pname == GL_MAX_DEPTH)
+         return GL_MAX_ARRAY_TEXTURE_LAYERS;
+      else
+         return GL_MAX_CUBE_MAP_TEXTURE_SIZE;
+   case GL_TEXTURE_BUFFER:
+      return GL_MAX_TEXTURE_BUFFER_SIZE;
+   default:
+      return 0;
+   }
+}
+
+/*
+ * Returns the dimensions associated to a target. GL_TEXTURE_BUFFER and
+ * GL_RENDERBUFFER have associated a dimension, but they are not textures
+ * per-se, so we can't just call _mesa_get_texture_dimension directly.
+ */
+static GLint
+get_target_dimensions(GLenum target)
+{
+   switch(target) {
+   case GL_TEXTURE_BUFFER:
+      return 1;
+   case GL_RENDERBUFFER:
+      return 2;
+   default:
+      return _mesa_get_texture_dimensions(target);
+   }
+}
+
+/*
+ * Returns the minimum amount of dimensions associated to a pname. So for
+ * example, if querying GL_MAX_HEIGHT, it is assumed that your target would
+ * have as minimum 2 dimensions.
+ *
+ * Useful to handle sentences like this from query2 spec:
+ *
+ * "MAX_HEIGHT:
+ *  <skip>
+ *  If the resource does not have at least two dimensions
+ *  <skip>."
+ */
+static GLint
+get_min_dimensions(GLenum pname)
+{
+   switch(pname) {
+   case GL_MAX_WIDTH:
+      return 1;
+   case GL_MAX_HEIGHT:
+      return 2;
+   case GL_MAX_DEPTH:
+      return 3;
+   default:
+      return 0;
+   }
+}
+
+/*
+ * Similar to teximage.c:check_multisample_target, but independent of the
+ * dimensions.
+ */
+static bool
+is_multisample_target(GLenum target)
+{
+   switch(target) {
+   case GL_TEXTURE_2D_MULTISAMPLE:
+   case GL_TEXTURE_2D_MULTISAMPLE_ARRAY:
+      return true;
+   default:
+      return false;
+   }
+
+}
+
 void GLAPIENTRY
 _mesa_GetInternalformativ(GLenum target, GLenum internalformat, GLenum pname,
                           GLsizei bufSize, GLint *params)
@@ -650,6 +877,9 @@ _mesa_GetInternalformativ(GLenum target, GLenum internalformat, GLenum pname,
        *     "Since multisampling is not supported for signed and unsigned
        *     integer internal formats, the value of NUM_SAMPLE_COUNTS will be
        *     zero for such formats.
+       *
+       * Since OpenGL ES 3.1 adds support for multisampled integer formats, we
+       * have to check the version for 30 exactly.
        */
       if (pname == GL_NUM_SAMPLE_COUNTS && ctx->API == API_OPENGLES2 &&
           ctx->Version == 30 && _mesa_is_enum_format_integer(internalformat)) {
@@ -675,290 +905,617 @@ _mesa_GetInternalformativ(GLenum target, GLenum internalformat, GLenum pname,
        *     format for representing resources of the specified <internalformat> is
        *     returned in <params>.
        *
-       * Therefore, we let the driver answer.
+       * Therefore, we let the driver answer. Note that if we reach this
+       * point, it means that the internalformat is supported, so the driver
+       * is called just to try to get a preferred format. If not supported,
+       * GL_NONE was already returned and the driver is not called.
        */
       ctx->Driver.QueryInternalFormat(ctx, target, internalformat, pname,
                                       buffer);
       break;
 
    case GL_INTERNALFORMAT_RED_SIZE:
-      /* @TODO */
-      break;
-
    case GL_INTERNALFORMAT_GREEN_SIZE:
-      /* @TODO */
-      break;
-
    case GL_INTERNALFORMAT_BLUE_SIZE:
-      /* @TODO */
-      break;
-
    case GL_INTERNALFORMAT_ALPHA_SIZE:
-      /* @TODO */
-      break;
-
    case GL_INTERNALFORMAT_DEPTH_SIZE:
-      /* @TODO */
-      break;
-
    case GL_INTERNALFORMAT_STENCIL_SIZE:
-      /* @TODO */
-      break;
-
    case GL_INTERNALFORMAT_SHARED_SIZE:
-      /* @TODO */
-      break;
-
    case GL_INTERNALFORMAT_RED_TYPE:
-      /* @TODO */
-      break;
-
    case GL_INTERNALFORMAT_GREEN_TYPE:
-      /* @TODO */
-      break;
-
    case GL_INTERNALFORMAT_BLUE_TYPE:
-      /* @TODO */
-      break;
-
    case GL_INTERNALFORMAT_ALPHA_TYPE:
-      /* @TODO */
-      break;
-
    case GL_INTERNALFORMAT_DEPTH_TYPE:
-      /* @TODO */
-      break;
+   case GL_INTERNALFORMAT_STENCIL_TYPE: {
+      GLint baseformat;
+      mesa_format texformat;
 
-   case GL_INTERNALFORMAT_STENCIL_TYPE:
-      /* @TODO */
-      break;
+      if (target != GL_RENDERBUFFER) {
+         if (!_mesa_legal_get_tex_level_parameter_target(ctx, target, true))
+            goto end;
 
-   case GL_MAX_WIDTH:
-      /* @TODO */
+         baseformat = _mesa_base_tex_format(ctx, internalformat);
+      } else {
+         baseformat = _mesa_base_fbo_format(ctx, internalformat);
+      }
+
+      /* Let the driver choose the texture format.
+       *
+       * Disclaimer: I am considering that drivers use for renderbuffers the
+       * same format-choice logic as for textures.
+       */
+      texformat = ctx->Driver.ChooseTextureFormat(ctx, target, internalformat,
+                                                  GL_NONE /*format */, GL_NONE /* type */);
+
+      if (texformat == MESA_FORMAT_NONE || baseformat <= 0)
+         goto end;
+
+      /* Implementation based on what Mesa does for glGetTexLevelParameteriv
+       * and glGetRenderbufferParameteriv functions.
+       */
+      if (pname == GL_INTERNALFORMAT_SHARED_SIZE) {
+         if (_mesa_has_EXT_texture_shared_exponent(ctx) &&
+             target != GL_TEXTURE_BUFFER &&
+             target != GL_RENDERBUFFER &&
+             texformat == MESA_FORMAT_R9G9B9E5_FLOAT) {
+            buffer[0] = 5;
+         }
+         goto end;
+      }
+
+      if (!_mesa_base_format_has_channel(baseformat, pname))
+         goto end;
+
+      switch (pname) {
+      case GL_INTERNALFORMAT_DEPTH_SIZE:
+         if (!_mesa_has_ARB_depth_texture(ctx) &&
+             target != GL_RENDERBUFFER &&
+             target != GL_TEXTURE_BUFFER)
+            goto end;
+         /* fallthrough */
+      case GL_INTERNALFORMAT_RED_SIZE:
+      case GL_INTERNALFORMAT_GREEN_SIZE:
+      case GL_INTERNALFORMAT_BLUE_SIZE:
+      case GL_INTERNALFORMAT_ALPHA_SIZE:
+      case GL_INTERNALFORMAT_STENCIL_SIZE:
+         buffer[0] = _mesa_get_format_bits(texformat, pname);
+         break;
+
+      case GL_INTERNALFORMAT_DEPTH_TYPE:
+         if (!_mesa_has_ARB_texture_float(ctx))
+            goto end;
+         /* fallthrough */
+      case GL_INTERNALFORMAT_RED_TYPE:
+      case GL_INTERNALFORMAT_GREEN_TYPE:
+      case GL_INTERNALFORMAT_BLUE_TYPE:
+      case GL_INTERNALFORMAT_ALPHA_TYPE:
+      case GL_INTERNALFORMAT_STENCIL_TYPE:
+         buffer[0]  = _mesa_get_format_datatype(texformat);
+         break;
+
+      default:
+         break;
+
+      }
       break;
+   }
 
+      /* For WIDTH/HEIGHT/DEPTH/LAYERS there is no reason to think that the
+       * returned values should be different to the values returned by
+       * GetInteger with MAX_TEXTURE_SIZE, MAX_3D_TEXTURE_SIZE, etc.*/
+   case GL_MAX_WIDTH:
    case GL_MAX_HEIGHT:
-      /* @TODO */
-      break;
+   case GL_MAX_DEPTH: {
+      GLenum get_pname;
+      GLint dimensions;
+      GLint min_dimensions;
 
-   case GL_MAX_DEPTH:
-      /* @TODO */
+      /* From query2:MAX_HEIGHT spec (as example):
+       *
+       * "If the resource does not have at least two dimensions, or if the
+       * resource is unsupported, zero is returned."
+       */
+      dimensions = get_target_dimensions(target);
+      min_dimensions = get_min_dimensions(pname);
+      if (dimensions < min_dimensions)
+         goto end;
+
+      get_pname = equivalentSizePname(target, pname);
+      if (get_pname == 0)
+         goto end;
+
+      _mesa_GetIntegerv(get_pname, buffer);
       break;
+   }
 
    case GL_MAX_LAYERS:
-      /* @TODO */
-      break;
+      if (!_mesa_has_EXT_texture_array(ctx))
+         goto end;
 
-   case GL_MAX_COMBINED_DIMENSIONS:
-      /* @TODO */
+      if (!_mesa_is_array_texture(target))
+         goto end;
+
+      _mesa_GetIntegerv(GL_MAX_ARRAY_TEXTURE_LAYERS, buffer);
+      break;
+
+   case GL_MAX_COMBINED_DIMENSIONS:{
+      GLint64 combined_value = 1;
+      GLenum max_dimensions_pnames[] = {
+         GL_MAX_WIDTH,
+         GL_MAX_HEIGHT,
+         GL_MAX_DEPTH,
+         GL_SAMPLES
+      };
+      unsigned i;
+      GLint current_value;
+
+      /* Combining the dimensions. Note that for array targets, this would
+       * automatically include the value of MAX_LAYERS, as that value is
+       * returned as MAX_HEIGHT or MAX_DEPTH */
+      for (i = 0; i < 4; i++) {
+         if (max_dimensions_pnames[i] == GL_SAMPLES &&
+             !is_multisample_target(target))
+            continue;
+
+         _mesa_GetInternalformativ(target, internalformat,
+                                   max_dimensions_pnames[i],
+                                   1, &current_value);
+
+         if (current_value != 0)
+            combined_value *= current_value;
+      }
+
+      if (_mesa_is_cube_map_texture(target))
+         combined_value *= 6;
+
+      /* We pack the 64-bit value on two 32-bit values. Calling the 32-bit
+       * query, this would work as far as the value can be hold on a 32-bit
+       * signed integer. For the 64-bit query, the wrapper around the 32-bit
+       * query will unpack the value */
+      memcpy(buffer, &combined_value, sizeof(GLint64));
       break;
+   }
 
    case GL_COLOR_COMPONENTS:
-      /* @TODO */
+      /* The ARB_internalformat_query2 spec says:
+       *
+       *     "- COLOR_COMPONENTS: If the internal format contains any color
+       *     components (R, G, B, or A), TRUE is returned in <params>.
+       *     If the internal format is unsupported or contains no color
+       *     components, FALSE is returned."
+       */
+      if (_mesa_is_color_format(internalformat))
+         buffer[0] = GL_TRUE;
       break;
 
    case GL_DEPTH_COMPONENTS:
-      /* @TODO */
+      /* The ARB_internalformat_query2 spec says:
+       *
+       *     "- DEPTH_COMPONENTS: If the internal format contains a depth
+       *     component (D), TRUE is returned in <params>. If the internal format
+       *     is unsupported or contains no depth component, FALSE is returned."
+       */
+      if (_mesa_is_depth_format(internalformat) ||
+          _mesa_is_depthstencil_format(internalformat))
+         buffer[0] = GL_TRUE;
       break;
 
    case GL_STENCIL_COMPONENTS:
-      /* @TODO */
+      /* The ARB_internalformat_query2 spec says:
+       *
+       *     "- STENCIL_COMPONENTS: If the internal format contains a stencil
+       *     component (S), TRUE is returned in <params>. If the internal format
+       *     is unsupported or contains no stencil component, FALSE is returned.
+       */
+      if (_mesa_is_stencil_format(internalformat) ||
+          _mesa_is_depthstencil_format(internalformat))
+         buffer[0] = GL_TRUE;
       break;
 
    case GL_COLOR_RENDERABLE:
-      /* @TODO */
-      break;
-
    case GL_DEPTH_RENDERABLE:
-      /* @TODO */
-      break;
-
    case GL_STENCIL_RENDERABLE:
-      /* @TODO */
-      break;
+      if (!_is_renderable(ctx, internalformat))
+         goto end;
 
-   case GL_FRAMEBUFFER_RENDERABLE:
-      /* @TODO */
-      break;
+      if (pname == GL_COLOR_RENDERABLE) {
+         if (!_mesa_is_color_format(internalformat))
+            goto end;
+      } else {
+         GLenum baseFormat = _mesa_base_fbo_format(ctx, internalformat);
+         if (baseFormat != GL_DEPTH_STENCIL &&
+             ((pname == GL_DEPTH_RENDERABLE && baseFormat != GL_DEPTH_COMPONENT) ||
+              (pname == GL_STENCIL_RENDERABLE && baseFormat != GL_STENCIL_INDEX)))
+            goto end;
+      }
 
-   case GL_FRAMEBUFFER_RENDERABLE_LAYERED:
-      /* @TODO */
+      buffer[0] = GL_TRUE;
       break;
 
+   case GL_FRAMEBUFFER_RENDERABLE_LAYERED:
+      if (!_mesa_has_EXT_texture_array(ctx) ||
+          _legal_target_for_framebuffer_texture_layer(ctx, target))
+         goto end;
+      /* fallthrough */
+   case GL_FRAMEBUFFER_RENDERABLE:
    case GL_FRAMEBUFFER_BLEND:
-      /* @TODO */
-      break;
+      if (!_mesa_has_ARB_framebuffer_object(ctx))
+         goto end;
 
-   case GL_READ_PIXELS:
-      /* @TODO */
-      break;
+      if (target == GL_TEXTURE_BUFFER ||
+          !_is_renderable(ctx, internalformat))
+         goto end;
 
-   case GL_READ_PIXELS_FORMAT:
-      /* @TODO */
+      ctx->Driver.QueryInternalFormat(ctx, target, internalformat, pname,
+                                      buffer);
       break;
 
+   case GL_READ_PIXELS:
+   case GL_READ_PIXELS_FORMAT:
    case GL_READ_PIXELS_TYPE:
-      /* @TODO */
+      ctx->Driver.QueryInternalFormat(ctx, target, internalformat, pname,
+                                      buffer);
       break;
 
    case GL_TEXTURE_IMAGE_FORMAT:
-      /* @TODO */
-      break;
-
-   case GL_TEXTURE_IMAGE_TYPE:
-      /* @TODO */
-      break;
-
    case GL_GET_TEXTURE_IMAGE_FORMAT:
-      /* @TODO */
-      break;
-
+   case GL_TEXTURE_IMAGE_TYPE:
    case GL_GET_TEXTURE_IMAGE_TYPE:
-      /* @TODO */
+      ctx->Driver.QueryInternalFormat(ctx, target, internalformat, pname,
+                                      buffer);
       break;
 
    case GL_MIPMAP:
-      /* @TODO */
-      break;
-
    case GL_MANUAL_GENERATE_MIPMAP:
-      /* @TODO */
-      break;
-
    case GL_AUTO_GENERATE_MIPMAP:
-      /* @TODO */
+      if (!_mesa_is_valid_generate_texture_mipmap_target(ctx, target) ||
+          !_mesa_is_valid_generate_texture_mipmap_internalformat(ctx,
+                                                              internalformat)) {
+         goto end;
+      }
+
+      if (pname == GL_MIPMAP) {
+         buffer[0] = GL_TRUE;
+         goto end;
+      }
+      else if (pname == GL_MANUAL_GENERATE_MIPMAP) {
+         if (!_mesa_has_ARB_framebuffer_object(ctx))
+            goto end;
+      }
+      else {
+         /* From ARB_internalformat_query2:
+          *    "Dependencies on OpenGL 3.2 (Core Profile)
+          *     In core profiles for OpenGL 3.2 and later versions, queries
+          *     for the AUTO_GENERATE_MIPMAP <pname> return the appropriate
+          *     unsupported response."
+          */
+         if (_mesa_is_desktop_gl(ctx) && ctx->Version >= 32)
+            goto end;
+      }
+
+      ctx->Driver.QueryInternalFormat(ctx, target, internalformat, pname,
+                                      buffer);
       break;
 
    case GL_COLOR_ENCODING:
-      /* @TODO */
+      if (!_mesa_is_color_format(internalformat))
+         goto end;
+
+      if (_mesa_is_srgb_format(internalformat))
+         buffer[0] = GL_SRGB;
+      else
+         buffer[0] = GL_LINEAR;
       break;
 
    case GL_SRGB_READ:
-      /* @TODO */
+      if (!_mesa_has_EXT_texture_sRGB(ctx) ||
+          !_mesa_is_srgb_format(internalformat)) {
+         goto end;
+      }
+
+      ctx->Driver.QueryInternalFormat(ctx, target, internalformat, pname,
+                                      buffer);
       break;
 
    case GL_SRGB_WRITE:
-      /* @TODO */
+      if (!_mesa_has_EXT_framebuffer_sRGB(ctx) ||
+          !_mesa_is_color_format(internalformat)) {
+         goto end;
+      }
+
+      ctx->Driver.QueryInternalFormat(ctx, target, internalformat, pname,
+                                      buffer);
       break;
 
    case GL_SRGB_DECODE_ARB:
-      /* @TODO */
+      /* Presence of EXT_texture_sRGB_decode was already verified */
+      if (!_mesa_has_EXT_texture_sRGB(ctx) ||
+          target == GL_RENDERBUFFER ||
+          !_mesa_is_srgb_format(internalformat)) {
+         goto end;
+      }
+
+      ctx->Driver.QueryInternalFormat(ctx, target, internalformat, pname,
+                                      buffer);
       break;
 
    case GL_FILTER:
-      /* @TODO */
-      break;
+      /* If it doesn't allow to set sampler parameters then it would not allow
+       * to set a filter different to GL_NEAREST. In practice, this method
+       * only filters out MULTISAMPLE/MULTISAMPLE_ARRAY */
+      if (!_mesa_target_allows_setting_sampler_parameters(target))
+         goto end;
 
-   case GL_VERTEX_TEXTURE:
-      /* @TODO */
-      break;
+      if (_mesa_is_enum_format_integer(internalformat))
+         goto end;
 
-   case GL_TESS_CONTROL_TEXTURE:
-      /* @TODO */
-      break;
+      if (target == GL_TEXTURE_BUFFER)
+         goto end;
 
-   case GL_TESS_EVALUATION_TEXTURE:
-      /* @TODO */
+      /* At this point we know that multi-texel filtering is supported. We
+       * need to call the driver to know if it is CAVEAT_SUPPORT or
+       * FULL_SUPPORT.
+       */
+      ctx->Driver.QueryInternalFormat(ctx, target, internalformat, pname,
+                                      buffer);
       break;
 
+   case GL_VERTEX_TEXTURE:
+   case GL_TESS_CONTROL_TEXTURE:
+   case GL_TESS_EVALUATION_TEXTURE:
    case GL_GEOMETRY_TEXTURE:
-      /* @TODO */
-      break;
-
    case GL_FRAGMENT_TEXTURE:
-      /* @TODO */
-      break;
-
    case GL_COMPUTE_TEXTURE:
-      /* @TODO */
-      break;
+      if (target == GL_RENDERBUFFER)
+         goto end;
 
-   case GL_TEXTURE_SHADOW:
-      /* @TODO */
-      break;
+      if ((pname == GL_TESS_CONTROL_TEXTURE ||
+           pname == GL_TESS_EVALUATION_TEXTURE) &&
+          !_mesa_has_tessellation(ctx))
+         goto end;
 
-   case GL_TEXTURE_GATHER:
-      /* @TODO */
+      if (pname == GL_GEOMETRY_TEXTURE && !_mesa_has_geometry_shaders(ctx))
+         goto end;
+
+      if (pname == GL_COMPUTE_TEXTURE && !_mesa_has_compute_shaders(ctx))
+         goto end;
+
+      ctx->Driver.QueryInternalFormat(ctx, target, internalformat, pname,
+                                      buffer);
       break;
 
+   case GL_TEXTURE_GATHER:
    case GL_TEXTURE_GATHER_SHADOW:
-      /* @TODO */
-      break;
+      if (!_mesa_has_ARB_texture_gather(ctx))
+         goto end;
 
-   case GL_SHADER_IMAGE_LOAD:
-      /* @TODO */
+      /* fallthrough */
+   case GL_TEXTURE_SHADOW:
+      /* Only depth or depth-stencil image formats make sense in shadow
+         samplers */
+      if (pname != GL_TEXTURE_GATHER &&
+          !_mesa_is_depth_format(internalformat) &&
+          !_mesa_is_depthstencil_format(internalformat))
+         goto end;
+
+      /* Validate the target for shadow and gather operations */
+      switch (target) {
+      case GL_TEXTURE_2D:
+      case GL_TEXTURE_2D_ARRAY:
+      case GL_TEXTURE_CUBE_MAP:
+      case GL_TEXTURE_CUBE_MAP_ARRAY:
+      case GL_TEXTURE_RECTANGLE:
+         break;
+
+      case GL_TEXTURE_1D:
+      case GL_TEXTURE_1D_ARRAY:
+         /* 1D and 1DArray textures are not admitted in gather operations */
+         if (pname != GL_TEXTURE_SHADOW)
+            goto end;
+         break;
+
+      default:
+         goto end;
+      }
+
+      ctx->Driver.QueryInternalFormat(ctx, target, internalformat, pname,
+                                      buffer);
       break;
 
+   case GL_SHADER_IMAGE_LOAD:
    case GL_SHADER_IMAGE_STORE:
-      /* @TODO */
+      if (!_mesa_has_ARB_shader_image_load_store(ctx))
+         goto end;
+
+      /* We call to _mesa_is_shader_image_format_supported
+       * using "internalformat" as parameter, because the
+       * the ARB_internalformat_query2 spec says:
+       * "In this case the <internalformat> is the value of the <format>
+       * parameter that is passed to BindImageTexture."
+       */
+      if (target == GL_RENDERBUFFER ||
+          !_mesa_is_shader_image_format_supported(ctx, internalformat))
+         goto end;
+
+      ctx->Driver.QueryInternalFormat(ctx, target, internalformat, pname,
+                                      buffer);
       break;
 
    case GL_SHADER_IMAGE_ATOMIC:
-      /* @TODO */
+      if (!_mesa_has_ARB_shader_image_load_store(ctx))
+         goto end;
+
+      ctx->Driver.QueryInternalFormat(ctx, target, internalformat, pname,
+                                      buffer);
       break;
 
-   case GL_IMAGE_TEXEL_SIZE:
-      /* @TODO */
+   case GL_IMAGE_TEXEL_SIZE: {
+      mesa_format image_format;
+
+      if (!_mesa_has_ARB_shader_image_load_store(ctx) ||
+          target == GL_RENDERBUFFER)
+         goto end;
+
+      image_format = _mesa_get_shader_image_format(internalformat);
+      if (image_format == MESA_FORMAT_NONE)
+         goto end;
+
+      /* We return bits */
+      buffer[0] = (_mesa_get_format_bytes(image_format) * 8);
       break;
+   }
 
    case GL_IMAGE_COMPATIBILITY_CLASS:
-      /* @TODO */
-      break;
+      if (!_mesa_has_ARB_shader_image_load_store(ctx) ||
+          target == GL_RENDERBUFFER)
+         goto end;
 
-   case GL_IMAGE_PIXEL_FORMAT:
-      /* @TODO */
+      buffer[0] = _mesa_get_image_format_class(internalformat);
       break;
 
-   case GL_IMAGE_PIXEL_TYPE:
-      /* @TODO */
-      break;
+   case GL_IMAGE_PIXEL_FORMAT: {
+      GLint base_format;
 
-   case GL_IMAGE_FORMAT_COMPATIBILITY_TYPE:
-      /* @TODO */
-      break;
+      if (!_mesa_has_ARB_shader_image_load_store(ctx) ||
+          target == GL_RENDERBUFFER ||
+          !_mesa_is_shader_image_format_supported(ctx, internalformat))
+         goto end;
 
-   case GL_SIMULTANEOUS_TEXTURE_AND_DEPTH_TEST:
-      /* @TODO */
+      base_format = _mesa_base_tex_format(ctx, internalformat);
+      if (base_format == -1)
+         goto end;
+
+      if (_mesa_is_enum_format_integer(internalformat))
+         buffer[0] = _mesa_base_format_to_integer_format(base_format);
+      else
+         buffer[0] = base_format;
       break;
+   }
 
-   case GL_SIMULTANEOUS_TEXTURE_AND_STENCIL_TEST:
-      /* @TODO */
+   case GL_IMAGE_PIXEL_TYPE: {
+      mesa_format image_format;
+      GLenum datatype;
+      GLuint comps;
+
+      if (!_mesa_has_ARB_shader_image_load_store(ctx) ||
+          target == GL_RENDERBUFFER)
+         goto end;
+
+      image_format = _mesa_get_shader_image_format(internalformat);
+      if (image_format == MESA_FORMAT_NONE)
+         goto end;
+
+      _mesa_uncompressed_format_to_type_and_comps(image_format, &datatype,
+                                                  &comps);
+      if (!datatype)
+         goto end;
+
+      buffer[0] = datatype;
       break;
+   }
+
+   case GL_IMAGE_FORMAT_COMPATIBILITY_TYPE: {
+      if (!_mesa_has_ARB_shader_image_load_store(ctx))
+         goto end;
+
+      if (!_mesa_legal_get_tex_level_parameter_target(ctx, target, true))
+         goto end;
+
+      /* From spec: "Equivalent to calling GetTexParameter with <value> set
+       * to IMAGE_FORMAT_COMPATIBILITY_TYPE."
+       *
+       * GetTexParameter just returns
+       * tex_obj->ImageFormatCompatibilityType. We create a fake tex_obj
+       * just with the purpose of getting the value.
+       */
+      struct gl_texture_object *tex_obj = _mesa_new_texture_object(ctx, 0, target);
+      buffer[0] = tex_obj->ImageFormatCompatibilityType;
+      _mesa_delete_texture_object(ctx, tex_obj);
 
-   case GL_SIMULTANEOUS_TEXTURE_AND_DEPTH_WRITE:
-      /* @TODO */
       break;
+   }
 
+   case GL_SIMULTANEOUS_TEXTURE_AND_DEPTH_TEST:
+   case GL_SIMULTANEOUS_TEXTURE_AND_STENCIL_TEST:
+   case GL_SIMULTANEOUS_TEXTURE_AND_DEPTH_WRITE:
    case GL_SIMULTANEOUS_TEXTURE_AND_STENCIL_WRITE:
-      /* @TODO */
+      if (target == GL_RENDERBUFFER)
+         goto end;
+
+      if (!_mesa_is_depthstencil_format(internalformat)) {
+         if (((pname == GL_SIMULTANEOUS_TEXTURE_AND_DEPTH_TEST ||
+               pname == GL_SIMULTANEOUS_TEXTURE_AND_DEPTH_WRITE) &&
+              !_mesa_is_depth_format(internalformat)) ||
+             ((pname == GL_SIMULTANEOUS_TEXTURE_AND_STENCIL_TEST ||
+               pname == GL_SIMULTANEOUS_TEXTURE_AND_STENCIL_WRITE) &&
+              !_mesa_is_stencil_format(internalformat)))
+            goto end;
+      }
+
+      ctx->Driver.QueryInternalFormat(ctx, target, internalformat, pname,
+                                      buffer);
       break;
 
    case GL_TEXTURE_COMPRESSED:
-      /* @TODO */
+      buffer[0] = _mesa_is_compressed_format(ctx, internalformat);
       break;
 
    case GL_TEXTURE_COMPRESSED_BLOCK_WIDTH:
-      /* @TODO */
-      break;
-
    case GL_TEXTURE_COMPRESSED_BLOCK_HEIGHT:
-      /* @TODO */
-      break;
+   case GL_TEXTURE_COMPRESSED_BLOCK_SIZE: {
+      mesa_format mesaformat;
+      GLint block_size;
 
-   case GL_TEXTURE_COMPRESSED_BLOCK_SIZE:
-      /* @TODO */
+      mesaformat = _mesa_glenum_to_compressed_format(internalformat);
+      if (mesaformat == MESA_FORMAT_NONE)
+         goto end;
+
+      block_size = _mesa_get_format_bytes(mesaformat);
+      assert(block_size > 0);
+
+      if (pname == GL_TEXTURE_COMPRESSED_BLOCK_SIZE) {
+         buffer[0] = block_size;
+      } else {
+         GLuint bwidth, bheight;
+
+         /* Returns the width and height in pixels. We return bytes */
+         _mesa_get_format_block_size(mesaformat, &bwidth, &bheight);
+         assert(bwidth > 0 && bheight > 0);
+
+         if (pname == GL_TEXTURE_COMPRESSED_BLOCK_WIDTH)
+            buffer[0] = block_size / bheight;
+         else
+            buffer[0] = block_size / bwidth;
+      }
       break;
+   }
 
    case GL_CLEAR_BUFFER:
-      /* @TODO */
-      break;
+      if (target != GL_TEXTURE_BUFFER)
+         goto end;
 
-   case GL_TEXTURE_VIEW:
-      /* @TODO */
+      ctx->Driver.QueryInternalFormat(ctx, target, internalformat, pname,
+                                      buffer);
       break;
 
+   case GL_TEXTURE_VIEW:
    case GL_VIEW_COMPATIBILITY_CLASS:
-      /* @TODO */
+      if (!_mesa_has_ARB_texture_view(ctx) ||
+          target == GL_TEXTURE_BUFFER ||
+          target == GL_RENDERBUFFER)
+         goto end;
+
+      if (pname == GL_TEXTURE_VIEW) {
+         ctx->Driver.QueryInternalFormat(ctx, target, internalformat, pname,
+                                         buffer);
+      } else {
+         GLenum view_class = _mesa_texture_view_lookup_view_class(ctx,
+                                                                  internalformat);
+         if (view_class == GL_FALSE)
+            goto end;
+
+         buffer[0] = view_class;
+      }
       break;
 
    default:
@@ -988,6 +1545,11 @@ void GLAPIENTRY
 _mesa_GetInternalformati64v(GLenum target, GLenum internalformat,
                             GLenum pname, GLsizei bufSize, GLint64 *params)
 {
+   GLint params32[16];
+   unsigned i;
+   GLsizei realSize = MIN2(bufSize, 16);
+   GLsizei callSize;
+
    GET_CURRENT_CONTEXT(ctx);
 
    ASSERT_OUTSIDE_BEGIN_END(ctx);
@@ -997,5 +1559,32 @@ _mesa_GetInternalformati64v(GLenum target, GLenum internalformat,
       return;
    }
 
-   _mesa_debug(ctx, "glGetInternalformati64v() not implemented");
+   /* For SAMPLES there are cases where params needs to remain unmodified. As
+    * no pname can return a negative value, we fill params32 with negative
+    * values as reference values, that can be used to know what copy-back to
+    * params */
+   memset(params32, -1, 16);
+
+   /* For GL_MAX_COMBINED_DIMENSIONS we need to get back 2 32-bit integers,
+    * and at the same time we only need 2. So for that pname, we call the
+    * 32-bit query with bufSize 2, except on the case of bufSize 0, that is
+    * basically like asking to not get the value, but that is a caller
+    * problem. */
+   if (pname == GL_MAX_COMBINED_DIMENSIONS && bufSize > 0)
+      callSize = 2;
+   else
+      callSize = bufSize;
+
+   _mesa_GetInternalformativ(target, internalformat, pname, callSize, params32);
+
+   if (pname == GL_MAX_COMBINED_DIMENSIONS) {
+      memcpy(params, params32, sizeof(GLint64));
+   } else {
+      for (i = 0; i < realSize; i++) {
+         /* We only copy back the values that changed */
+         if (params32[i] < 0)
+            break;
+         params[i] = (GLint64) params32[i];
+      }
+   }
 }