[Mesa-dev] [PATCH 1/3] mesa: new _mesa_error_check_format_and_type() function
Brian Paul
brianp at vmware.com
Thu Feb 2 06:14:48 PST 2012
This replaces the _mesa_is_legal_format_and_type() function.
According to the spec, some invalid format/type combinations to
glDrawPixels, ReadPixels and glTexImage should generate
GL_INVALID_ENUM but others should generate GL_INVALID_OPERATION.
With the old function we didn't make that distinction and generated
GL_INVALID_ENUM errors instead of GL_INVALID_OPERATION. The new
function returns one of those errors or GL_NO_ERROR.
This will also let us remove some redundant format/type checks in
follow-on commit.
---
src/mesa/main/image.c | 212 ++++++++++++++++++++++++++++++-------------
src/mesa/main/image.h | 6 +-
src/mesa/main/readpix.c | 9 +-
src/mesa/main/texgetimage.c | 16 ++--
src/mesa/main/teximage.c | 25 ++---
5 files changed, 174 insertions(+), 94 deletions(-)
diff --git a/src/mesa/main/image.c b/src/mesa/main/image.c
index 3491704..cc44468 100644
--- a/src/mesa/main/image.c
+++ b/src/mesa/main/image.c
@@ -356,18 +356,79 @@ _mesa_bytes_per_pixel( GLenum format, GLenum type )
/**
- * Test for a legal pixel format and type.
+ * Do error checking of format/type combinations for glReadPixels,
+ * glDrawPixels and glTex[Sub]Image. Note that depending on the format
+ * and type values, we may either generate GL_INVALID_OPERATION or
+ * GL_INVALID_ENUM.
*
* \param format pixel format.
* \param type pixel type.
*
- * \return GL_TRUE if the given pixel format and type are legal, or GL_FALSE
- * otherwise.
+ * \return GL_INVALID_ENUM, GL_INVALID_OPERATION or GL_NO_ERROR
*/
-GLboolean
-_mesa_is_legal_format_and_type(const struct gl_context *ctx,
- GLenum format, GLenum type)
+GLenum
+_mesa_error_check_format_and_type(const struct gl_context *ctx,
+ GLenum format, GLenum type)
{
+ /* special type-based checks (see glReadPixels, glDrawPixels error lists) */
+ switch (type) {
+ case GL_BITMAP:
+ if (format != GL_COLOR_INDEX &&
+ format != GL_STENCIL_INDEX) {
+ return GL_INVALID_ENUM;
+ }
+ break;
+
+ case GL_UNSIGNED_BYTE_3_3_2:
+ case GL_UNSIGNED_BYTE_2_3_3_REV:
+ case GL_UNSIGNED_SHORT_5_6_5:
+ case GL_UNSIGNED_SHORT_5_6_5_REV:
+ if (format != GL_RGB &&
+ format != GL_RGB_INTEGER_EXT) {
+ return GL_INVALID_OPERATION;
+ }
+ break;
+
+ case GL_UNSIGNED_SHORT_4_4_4_4:
+ case GL_UNSIGNED_SHORT_4_4_4_4_REV:
+ case GL_UNSIGNED_SHORT_5_5_5_1:
+ case GL_UNSIGNED_SHORT_1_5_5_5_REV:
+ case GL_UNSIGNED_INT_8_8_8_8:
+ case GL_UNSIGNED_INT_8_8_8_8_REV:
+ case GL_UNSIGNED_INT_10_10_10_2:
+ case GL_UNSIGNED_INT_2_10_10_10_REV:
+ if (format != GL_RGBA &&
+ format != GL_BGRA &&
+ format != GL_ABGR_EXT &&
+ format != GL_RGBA_INTEGER_EXT &&
+ format != GL_BGRA_INTEGER_EXT) {
+ return GL_INVALID_OPERATION;
+ }
+ break;
+
+ case GL_UNSIGNED_INT_24_8:
+ if (!ctx->Extensions.EXT_packed_depth_stencil) {
+ return GL_INVALID_ENUM;
+ }
+ if (format != GL_DEPTH_STENCIL) {
+ return GL_INVALID_OPERATION;
+ }
+ return GL_NO_ERROR;
+
+ case GL_FLOAT_32_UNSIGNED_INT_24_8_REV:
+ if (!ctx->Extensions.ARB_depth_buffer_float) {
+ return GL_INVALID_ENUM;
+ }
+ if (format != GL_DEPTH_STENCIL) {
+ return GL_INVALID_OPERATION;
+ }
+ return GL_NO_ERROR;
+
+ default:
+ ; /* fall-through */
+ }
+
+ /* now, for each format, check the type for compatibility */
switch (format) {
case GL_COLOR_INDEX:
case GL_STENCIL_INDEX:
@@ -380,12 +441,14 @@ _mesa_is_legal_format_and_type(const struct gl_context *ctx,
case GL_INT:
case GL_UNSIGNED_INT:
case GL_FLOAT:
- return GL_TRUE;
- case GL_HALF_FLOAT_ARB:
- return ctx->Extensions.ARB_half_float_pixel;
+ return GL_NO_ERROR;
+ case GL_HALF_FLOAT:
+ return ctx->Extensions.ARB_half_float_pixel
+ ? GL_NO_ERROR : GL_INVALID_ENUM;
default:
- return GL_FALSE;
+ return GL_INVALID_ENUM;
}
+
case GL_RED:
case GL_GREEN:
case GL_BLUE:
@@ -404,16 +467,17 @@ _mesa_is_legal_format_and_type(const struct gl_context *ctx,
case GL_INT:
case GL_UNSIGNED_INT:
case GL_FLOAT:
- return GL_TRUE;
- case GL_HALF_FLOAT_ARB:
- return ctx->Extensions.ARB_half_float_pixel;
+ return GL_NO_ERROR;
+ case GL_HALF_FLOAT:
+ return ctx->Extensions.ARB_half_float_pixel
+ ? GL_NO_ERROR : GL_INVALID_ENUM;
default:
- return GL_FALSE;
+ return GL_INVALID_ENUM;
}
+
case GL_RG:
if (!ctx->Extensions.ARB_texture_rg)
- return GL_FALSE;
-
+ return GL_INVALID_ENUM;
switch (type) {
case GL_BYTE:
case GL_UNSIGNED_BYTE:
@@ -422,12 +486,14 @@ _mesa_is_legal_format_and_type(const struct gl_context *ctx,
case GL_INT:
case GL_UNSIGNED_INT:
case GL_FLOAT:
- return GL_TRUE;
- case GL_HALF_FLOAT_ARB:
- return ctx->Extensions.ARB_half_float_pixel;
+ return GL_NO_ERROR;
+ case GL_HALF_FLOAT:
+ return ctx->Extensions.ARB_half_float_pixel
+ ? GL_NO_ERROR : GL_INVALID_ENUM;
default:
- return GL_FALSE;
+ return GL_INVALID_ENUM;
}
+
case GL_RGB:
switch (type) {
case GL_BYTE:
@@ -441,16 +507,20 @@ _mesa_is_legal_format_and_type(const struct gl_context *ctx,
case GL_UNSIGNED_BYTE_2_3_3_REV:
case GL_UNSIGNED_SHORT_5_6_5:
case GL_UNSIGNED_SHORT_5_6_5_REV:
- return GL_TRUE;
- case GL_HALF_FLOAT_ARB:
- return ctx->Extensions.ARB_half_float_pixel;
+ return GL_NO_ERROR;
+ case GL_HALF_FLOAT:
+ return ctx->Extensions.ARB_half_float_pixel
+ ? GL_NO_ERROR : GL_INVALID_ENUM;
case GL_UNSIGNED_INT_5_9_9_9_REV:
- return ctx->Extensions.EXT_texture_shared_exponent;
+ return ctx->Extensions.EXT_texture_shared_exponent
+ ? GL_NO_ERROR : GL_INVALID_ENUM;
case GL_UNSIGNED_INT_10F_11F_11F_REV:
- return ctx->Extensions.EXT_packed_float;
+ return ctx->Extensions.EXT_packed_float
+ ? GL_NO_ERROR : GL_INVALID_ENUM;
default:
- return GL_FALSE;
+ return GL_INVALID_ENUM;
}
+
case GL_BGR:
switch (type) {
/* NOTE: no packed types are supported with BGR. That's
@@ -463,12 +533,14 @@ _mesa_is_legal_format_and_type(const struct gl_context *ctx,
case GL_INT:
case GL_UNSIGNED_INT:
case GL_FLOAT:
- return GL_TRUE;
- case GL_HALF_FLOAT_ARB:
- return ctx->Extensions.ARB_half_float_pixel;
+ return GL_NO_ERROR;
+ case GL_HALF_FLOAT:
+ return ctx->Extensions.ARB_half_float_pixel
+ ? GL_NO_ERROR : GL_INVALID_ENUM;
default:
- return GL_FALSE;
+ return GL_INVALID_ENUM;
}
+
case GL_RGBA:
case GL_BGRA:
case GL_ABGR_EXT:
@@ -488,28 +560,37 @@ _mesa_is_legal_format_and_type(const struct gl_context *ctx,
case GL_UNSIGNED_INT_8_8_8_8_REV:
case GL_UNSIGNED_INT_10_10_10_2:
case GL_UNSIGNED_INT_2_10_10_10_REV:
- return GL_TRUE;
- case GL_HALF_FLOAT_ARB:
- return ctx->Extensions.ARB_half_float_pixel;
+ return GL_NO_ERROR;
+ case GL_HALF_FLOAT:
+ return ctx->Extensions.ARB_half_float_pixel
+ ? GL_NO_ERROR : GL_INVALID_ENUM;
default:
- return GL_FALSE;
+ return GL_INVALID_ENUM;
}
+
case GL_YCBCR_MESA:
+ if (!ctx->Extensions.MESA_ycbcr_texture)
+ return GL_INVALID_ENUM;
if (type == GL_UNSIGNED_SHORT_8_8_MESA ||
type == GL_UNSIGNED_SHORT_8_8_REV_MESA)
- return GL_TRUE;
+ return GL_NO_ERROR;
else
- return GL_FALSE;
+ return GL_INVALID_OPERATION;
+
case GL_DEPTH_STENCIL_EXT:
- if ((ctx->Extensions.EXT_packed_depth_stencil &&
- type == GL_UNSIGNED_INT_24_8_EXT) ||
- (ctx->Extensions.ARB_depth_buffer_float &&
- type == GL_FLOAT_32_UNSIGNED_INT_24_8_REV))
- return GL_TRUE;
+ if (ctx->Extensions.EXT_packed_depth_stencil &&
+ type == GL_UNSIGNED_INT_24_8)
+ return GL_NO_ERROR;
+ else if (ctx->Extensions.ARB_depth_buffer_float &&
+ type == GL_FLOAT_32_UNSIGNED_INT_24_8_REV)
+ return GL_NO_ERROR;
else
- return GL_FALSE;
+ return GL_INVALID_ENUM;
+
case GL_DUDV_ATI:
case GL_DU8DV8_ATI:
+ if (!ctx->Extensions.ATI_envmap_bumpmap)
+ return GL_INVALID_ENUM;
switch (type) {
case GL_BYTE:
case GL_UNSIGNED_BYTE:
@@ -518,9 +599,9 @@ _mesa_is_legal_format_and_type(const struct gl_context *ctx,
case GL_INT:
case GL_UNSIGNED_INT:
case GL_FLOAT:
- return GL_TRUE;
+ return GL_NO_ERROR;
default:
- return GL_FALSE;
+ return GL_INVALID_ENUM;
}
/* integer-valued formats */
@@ -536,10 +617,11 @@ _mesa_is_legal_format_and_type(const struct gl_context *ctx,
case GL_UNSIGNED_SHORT:
case GL_INT:
case GL_UNSIGNED_INT:
- return ctx->VersionMajor >= 3 ||
- ctx->Extensions.EXT_texture_integer;
+ return (ctx->VersionMajor >= 3 ||
+ ctx->Extensions.EXT_texture_integer)
+ ? GL_NO_ERROR : GL_INVALID_ENUM;
default:
- return GL_FALSE;
+ return GL_INVALID_ENUM;
}
case GL_RGB_INTEGER_EXT:
@@ -550,15 +632,17 @@ _mesa_is_legal_format_and_type(const struct gl_context *ctx,
case GL_UNSIGNED_SHORT:
case GL_INT:
case GL_UNSIGNED_INT:
- return ctx->VersionMajor >= 3 ||
- ctx->Extensions.EXT_texture_integer;
+ return (ctx->VersionMajor >= 3 ||
+ ctx->Extensions.EXT_texture_integer)
+ ? GL_NO_ERROR : GL_INVALID_ENUM;
case GL_UNSIGNED_BYTE_3_3_2:
case GL_UNSIGNED_BYTE_2_3_3_REV:
case GL_UNSIGNED_SHORT_5_6_5:
case GL_UNSIGNED_SHORT_5_6_5_REV:
- return ctx->Extensions.ARB_texture_rgb10_a2ui;
+ return ctx->Extensions.ARB_texture_rgb10_a2ui
+ ? GL_NO_ERROR : GL_INVALID_ENUM;
default:
- return GL_FALSE;
+ return GL_INVALID_ENUM;
}
case GL_BGR_INTEGER_EXT:
@@ -570,10 +654,11 @@ _mesa_is_legal_format_and_type(const struct gl_context *ctx,
case GL_INT:
case GL_UNSIGNED_INT:
/* NOTE: no packed formats w/ BGR format */
- return ctx->VersionMajor >= 3 ||
- ctx->Extensions.EXT_texture_integer;
+ return (ctx->VersionMajor >= 3 ||
+ ctx->Extensions.EXT_texture_integer)
+ ? GL_NO_ERROR : GL_INVALID_ENUM;
default:
- return GL_FALSE;
+ return GL_INVALID_ENUM;
}
case GL_RGBA_INTEGER_EXT:
@@ -585,8 +670,9 @@ _mesa_is_legal_format_and_type(const struct gl_context *ctx,
case GL_UNSIGNED_SHORT:
case GL_INT:
case GL_UNSIGNED_INT:
- return ctx->VersionMajor >= 3 ||
- ctx->Extensions.EXT_texture_integer;
+ return (ctx->VersionMajor >= 3 ||
+ ctx->Extensions.EXT_texture_integer)
+ ? GL_NO_ERROR : GL_INVALID_ENUM;
case GL_UNSIGNED_SHORT_4_4_4_4:
case GL_UNSIGNED_SHORT_4_4_4_4_REV:
case GL_UNSIGNED_SHORT_5_5_5_1:
@@ -595,9 +681,10 @@ _mesa_is_legal_format_and_type(const struct gl_context *ctx,
case GL_UNSIGNED_INT_8_8_8_8_REV:
case GL_UNSIGNED_INT_10_10_10_2:
case GL_UNSIGNED_INT_2_10_10_10_REV:
- return ctx->Extensions.ARB_texture_rgb10_a2ui;
+ return ctx->Extensions.ARB_texture_rgb10_a2ui
+ ? GL_NO_ERROR : GL_INVALID_ENUM;
default:
- return GL_FALSE;
+ return GL_INVALID_ENUM;
}
case GL_LUMINANCE_INTEGER_EXT:
@@ -609,15 +696,16 @@ _mesa_is_legal_format_and_type(const struct gl_context *ctx,
case GL_UNSIGNED_SHORT:
case GL_INT:
case GL_UNSIGNED_INT:
- return ctx->Extensions.EXT_texture_integer;
+ return ctx->Extensions.EXT_texture_integer
+ ? GL_NO_ERROR : GL_INVALID_ENUM;
default:
- return GL_FALSE;
+ return GL_INVALID_ENUM;
}
default:
- ; /* fall-through */
+ return GL_INVALID_ENUM;
}
- return GL_FALSE;
+ return GL_NO_ERROR;
}
diff --git a/src/mesa/main/image.h b/src/mesa/main/image.h
index e4961ed..f1ed883 100644
--- a/src/mesa/main/image.h
+++ b/src/mesa/main/image.h
@@ -53,9 +53,9 @@ _mesa_components_in_format( GLenum format );
extern GLint
_mesa_bytes_per_pixel( GLenum format, GLenum type );
-extern GLboolean
-_mesa_is_legal_format_and_type(const struct gl_context *ctx,
- GLenum format, GLenum type);
+extern GLenum
+_mesa_error_check_format_and_type(const struct gl_context *ctx,
+ GLenum format, GLenum type);
extern GLboolean
_mesa_is_color_format(GLenum format);
diff --git a/src/mesa/main/readpix.c b/src/mesa/main/readpix.c
index 908a55e..6c64cbe 100644
--- a/src/mesa/main/readpix.c
+++ b/src/mesa/main/readpix.c
@@ -588,6 +588,7 @@ _mesa_error_check_format_type(struct gl_context *ctx, GLenum format,
{
const char *readDraw = drawing ? "Draw" : "Read";
const GLboolean reading = !drawing;
+ GLenum err;
/* state validation should have already been done */
ASSERT(ctx->NewState == 0x0);
@@ -609,9 +610,9 @@ _mesa_error_check_format_type(struct gl_context *ctx, GLenum format,
}
/* basic combinations test */
- if (!_mesa_is_legal_format_and_type(ctx, format, type)) {
- _mesa_error(ctx, GL_INVALID_ENUM,
- "gl%sPixels(format or type)", readDraw);
+ err = _mesa_error_check_format_and_type(ctx, format, type);
+ if (err != GL_NO_ERROR) {
+ _mesa_error(ctx, err, "gl%sPixels(format or type)", readDraw);
return GL_TRUE;
}
@@ -715,7 +716,7 @@ _mesa_error_check_format_type(struct gl_context *ctx, GLenum format,
}
break;
default:
- /* this should have been caught in _mesa_is_legal_format_type() */
+ /* this should have been caught in _mesa_error_check_format_type() */
_mesa_problem(ctx, "unexpected format in _mesa_%sPixels", readDraw);
return GL_TRUE;
}
diff --git a/src/mesa/main/texgetimage.c b/src/mesa/main/texgetimage.c
index 42495c8..58fed11 100644
--- a/src/mesa/main/texgetimage.c
+++ b/src/mesa/main/texgetimage.c
@@ -734,7 +734,7 @@ getteximage_error_check(struct gl_context *ctx, GLenum target, GLint level,
struct gl_texture_image *texImage;
const GLint maxLevels = _mesa_max_texture_levels(ctx, target);
const GLuint dimensions = (target == GL_TEXTURE_3D) ? 3 : 2;
- GLenum baseFormat;
+ GLenum baseFormat, err;
if (maxLevels == 0) {
_mesa_error(ctx, GL_INVALID_ENUM, "glGetTexImage(target=0x%x)", target);
@@ -777,6 +777,12 @@ getteximage_error_check(struct gl_context *ctx, GLenum target, GLint level,
if (!ctx->Extensions.ATI_envmap_bumpmap
&& _mesa_is_dudv_format(format)) {
_mesa_error(ctx, GL_INVALID_ENUM, "glGetTexImage(format)");
+ return;
+ }
+
+ err = _mesa_error_check_format_and_type(ctx, format, type);
+ if (err != GL_NO_ERROR) {
+ _mesa_error(ctx, err, "glGetTexImage(format/type)");
return GL_TRUE;
}
@@ -787,14 +793,6 @@ getteximage_error_check(struct gl_context *ctx, GLenum target, GLint level,
return GL_TRUE;
}
- if (!_mesa_is_legal_format_and_type(ctx, format, type)) {
- /* GL_INVALID_OPERATION is generated by a format/type
- * mismatch (see the 1.2 spec page 94, sec 3.6.4.)
- */
- _mesa_error(ctx, GL_INVALID_OPERATION, "glGetTexImage(target)");
- return GL_TRUE;
- }
-
texImage = _mesa_select_tex_image(ctx, texObj, target, level);
if (!texImage) {
/* non-existant texture image */
diff --git a/src/mesa/main/teximage.c b/src/mesa/main/teximage.c
index d11425d..2ac3e40 100644
--- a/src/mesa/main/teximage.c
+++ b/src/mesa/main/teximage.c
@@ -1511,6 +1511,7 @@ texture_error_check( struct gl_context *ctx,
const GLboolean isProxy = target == proxyTarget;
GLboolean sizeOK = GL_TRUE;
GLboolean colorFormat;
+ GLenum err;
/* Even though there are no color-index textures, we still have to support
* uploading color-index data and remapping it to RGB via the
@@ -1579,16 +1580,10 @@ texture_error_check( struct gl_context *ctx,
}
/* Check incoming image format and type */
- if (!_mesa_is_legal_format_and_type(ctx, format, type)) {
- /* Normally, GL_INVALID_OPERATION is generated by a format/type
- * mismatch (see the 1.2 spec page 94, sec 3.6.4.). But with the
- * GL_EXT_texture_integer extension, some combinations should generate
- * GL_INVALID_ENUM instead (grr!).
- */
+ err = _mesa_error_check_format_and_type(ctx, format, type);
+ if (err != GL_NO_ERROR) {
if (!isProxy) {
- GLenum error = _mesa_is_integer_format(format)
- ? GL_INVALID_ENUM : GL_INVALID_OPERATION;
- _mesa_error(ctx, error,
+ _mesa_error(ctx, err,
"glTexImage%dD(incompatible format 0x%x, type 0x%x)",
dimensions, format, type);
}
@@ -1737,6 +1732,8 @@ subtexture_error_check( struct gl_context *ctx, GLuint dimensions,
GLint width, GLint height, GLint depth,
GLenum format, GLenum type )
{
+ GLenum err;
+
/* Basic level check */
if (level < 0 || level >= MAX_TEXTURE_LEVELS) {
_mesa_error(ctx, GL_INVALID_ENUM, "glTexSubImage2D(level=%d)", level);
@@ -1760,13 +1757,9 @@ subtexture_error_check( struct gl_context *ctx, GLuint dimensions,
return GL_TRUE;
}
- if (!_mesa_is_legal_format_and_type(ctx, format, type)) {
- /* As with the glTexImage2D check above, the error code here
- * depends on texture integer.
- */
- GLenum error = _mesa_is_integer_format(format)
- ? GL_INVALID_OPERATION : GL_INVALID_ENUM;
- _mesa_error(ctx, error,
+ err = _mesa_error_check_format_and_type(ctx, format, type);
+ if (err != GL_NO_ERROR) {
+ _mesa_error(ctx, err,
"glTexSubImage%dD(incompatible format 0x%x, type 0x%x)",
dimensions, format, type);
return GL_TRUE;
--
1.7.3.4
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