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authormarha <marha@users.sourceforge.net>2011-01-25 07:15:07 +0000
committermarha <marha@users.sourceforge.net>2011-01-25 07:15:07 +0000
commitdb83ae15824cd5a710d61684733f3dc09517748b (patch)
tree0593f2485d27f1e21bfa883eb9e8a6446018b83a /mesalib/src/mesa/main/fbobject.c
parent75c2deab5262ebfb4aea4fe63e144488150f921a (diff)
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mesa git update 25 jan 2011
Diffstat (limited to 'mesalib/src/mesa/main/fbobject.c')
-rw-r--r--mesalib/src/mesa/main/fbobject.c135
1 files changed, 110 insertions, 25 deletions
diff --git a/mesalib/src/mesa/main/fbobject.c b/mesalib/src/mesa/main/fbobject.c
index 17c629544..2fe84754b 100644
--- a/mesalib/src/mesa/main/fbobject.c
+++ b/mesalib/src/mesa/main/fbobject.c
@@ -373,6 +373,37 @@ _mesa_framebuffer_renderbuffer(struct gl_context *ctx,
/**
+ * Fallback for ctx->Driver.ValidateFramebuffer()
+ * Check if the renderbuffer's formats are supported by the software
+ * renderer.
+ * Drivers should probably override this.
+ */
+void
+_mesa_validate_framebuffer(struct gl_context *ctx, struct gl_framebuffer *fb)
+{
+ gl_buffer_index buf;
+ for (buf = 0; buf < BUFFER_COUNT; buf++) {
+ const struct gl_renderbuffer *rb = fb->Attachment[buf].Renderbuffer;
+ if (rb) {
+ switch (rb->_BaseFormat) {
+ case GL_ALPHA:
+ case GL_LUMINANCE_ALPHA:
+ case GL_LUMINANCE:
+ case GL_INTENSITY:
+ case GL_RED:
+ case GL_RG:
+ fb->_Status = GL_FRAMEBUFFER_UNSUPPORTED;
+ return;
+ default:
+ /* render buffer format is supported by software rendering */
+ ;
+ }
+ }
+ }
+}
+
+
+/**
* For debug only.
*/
static void
@@ -960,42 +991,104 @@ _mesa_GenRenderbuffersEXT(GLsizei n, GLuint *renderbuffers)
/**
- * Given an internal format token for a renderbuffer, return the
- * corresponding base format.
+ * Given an internal format token for a render buffer, return the
+ * corresponding base format (one of GL_RGB, GL_RGBA, GL_STENCIL_INDEX,
+ * GL_DEPTH_COMPONENT, GL_DEPTH_STENCIL_EXT, GL_ALPHA, GL_LUMINANCE,
+ * GL_LUMINANCE_ALPHA, GL_INTENSITY, etc).
+ *
+ * This is similar to _mesa_base_tex_format() but the set of valid
+ * internal formats is different.
+ *
+ * Note that even if a format is determined to be legal here, validation
+ * of the FBO may fail if the format is not suppoted by the driver/GPU.
+ *
+ * \param internalFormat as passed to glRenderbufferStorage()
+ * \return the base internal format, or 0 if internalFormat is illegal
*/
GLenum
_mesa_base_fbo_format(struct gl_context *ctx, GLenum internalFormat)
{
- GLenum baseFormat;
-
+ /*
+ * Notes: some formats such as alpha, luminance, etc. were added
+ * with GL_ARB_framebuffer_object.
+ */
switch (internalFormat) {
+ case GL_ALPHA:
+ case GL_ALPHA4:
+ case GL_ALPHA8:
+ case GL_ALPHA12:
+ case GL_ALPHA16:
+ return ctx->Extensions.ARB_framebuffer_object ? GL_ALPHA : 0;
+ case GL_LUMINANCE:
+ case GL_LUMINANCE4:
+ case GL_LUMINANCE8:
+ case GL_LUMINANCE12:
+ case GL_LUMINANCE16:
+ return ctx->Extensions.ARB_framebuffer_object ? GL_LUMINANCE : 0;
+ case GL_LUMINANCE_ALPHA:
+ case GL_LUMINANCE4_ALPHA4:
+ case GL_LUMINANCE6_ALPHA2:
+ case GL_LUMINANCE8_ALPHA8:
+ case GL_LUMINANCE12_ALPHA4:
+ case GL_LUMINANCE12_ALPHA12:
+ case GL_LUMINANCE16_ALPHA16:
+ return ctx->Extensions.ARB_framebuffer_object ? GL_LUMINANCE_ALPHA : 0;
+ case GL_INTENSITY:
+ case GL_INTENSITY4:
+ case GL_INTENSITY8:
+ case GL_INTENSITY12:
+ case GL_INTENSITY16:
+ return ctx->Extensions.ARB_framebuffer_object ? GL_INTENSITY : 0;
+ case GL_RGB:
+ case GL_R3_G3_B2:
+ case GL_RGB4:
+ case GL_RGB5:
+ case GL_RGB8:
+ case GL_RGB10:
+ case GL_RGB12:
+ case GL_RGB16:
+ case GL_SRGB8_EXT:
+ return GL_RGB;
+ case GL_RGBA:
+ case GL_RGBA2:
+ case GL_RGBA4:
+ case GL_RGB5_A1:
+ case GL_RGBA8:
+ case GL_RGB10_A2:
+ case GL_RGBA12:
+ case GL_RGBA16:
case GL_RGBA16_SNORM:
- /* This is used internally by Mesa for accum buffers. */
+ case GL_SRGB8_ALPHA8_EXT:
return GL_RGBA;
case GL_STENCIL_INDEX:
case GL_STENCIL_INDEX1_EXT:
case GL_STENCIL_INDEX4_EXT:
case GL_STENCIL_INDEX8_EXT:
case GL_STENCIL_INDEX16_EXT:
- /* This is not a valid texture internalFormat, but valid for
- * renderbuffers.
- */
return GL_STENCIL_INDEX;
case GL_DEPTH_COMPONENT:
case GL_DEPTH_COMPONENT16:
case GL_DEPTH_COMPONENT24:
case GL_DEPTH_COMPONENT32:
- /* This is an override of _mesa_base_tex_format's check that
- * ARB_depth_texture is present. We allow depth RBs without it.
- */
return GL_DEPTH_COMPONENT;
- }
-
- baseFormat = _mesa_base_tex_format(ctx, internalFormat);
- if (baseFormat < 0)
+ case GL_DEPTH_STENCIL_EXT:
+ case GL_DEPTH24_STENCIL8_EXT:
+ if (ctx->Extensions.EXT_packed_depth_stencil)
+ return GL_DEPTH_STENCIL_EXT;
+ else
+ return 0;
+ case GL_RED:
+ case GL_R8:
+ case GL_R16:
+ return ctx->Extensions.ARB_texture_rg ? GL_RED : 0;
+ case GL_RG:
+ case GL_RG8:
+ case GL_RG16:
+ return ctx->Extensions.ARB_texture_rg ? GL_RG : 0;
+ /* XXX add floating point and integer formats eventually */
+ default:
return 0;
-
- return baseFormat;
+ }
}
@@ -1031,14 +1124,6 @@ renderbuffer_storage(GLenum target, GLenum internalFormat,
return;
}
- if (baseFormat != GL_DEPTH_COMPONENT &&
- baseFormat != GL_STENCIL_INDEX &&
- baseFormat != GL_DEPTH_STENCIL &&
- !_mesa_is_legal_color_format(ctx, baseFormat)) {
- _mesa_error(ctx, GL_INVALID_ENUM, "%s(internalFormat)", func);
- return;
- }
-
if (width < 1 || width > (GLsizei) ctx->Const.MaxRenderbufferSize) {
_mesa_error(ctx, GL_INVALID_VALUE, "%s(width)", func);
return;