X-Git-Url: https://git.cworth.org/git?a=blobdiff_plain;f=retrace%2Fglstate_images.cpp;h=b055002977d3c351e7b0cf014b45455df1ac6160;hb=d9d9d22837705de6a2c42ad3f9b23223a2b98fe0;hp=37c0ae1da66907acdc4c4e50e4ee7714c5201301;hpb=6f80233c1a7251df2edb1b9f93cee37f4fc152f7;p=apitrace

diff --git a/retrace/glstate_images.cpp b/retrace/glstate_images.cpp
index 37c0ae1..b055002 100644
--- a/retrace/glstate_images.cpp
+++ b/retrace/glstate_images.cpp
@@ -506,6 +506,10 @@ internalFormatDescs[] = {
 };
 
 
+/**
+ * Choose the glReadPixels/glGetTexImage format appropriate for the given
+ * internalFormat.
+ */
 static GLenum
 getFormat(GLenum internalFormat)
 {
@@ -534,11 +538,11 @@ dumpActiveTextureLevel(JSONWriter &json, Context &context, GLenum target, GLint
 
     json.beginMember(label);
 
-    GLenum format = getFormat(desc.internalFormat);;
+    GLenum format = getFormat(desc.internalFormat);
     if (context.ES && format == GL_DEPTH_COMPONENT) {
         format = GL_RED;
     }
-    GLuint channels = _gl_format_channels(format);;
+    GLuint channels = _gl_format_channels(format);
 
     image::Image *image = new image::Image(desc.width, desc.height*desc.depth, channels, true);
 
@@ -1189,7 +1193,7 @@ dumpDrawableImages(JSONWriter &json, Context &context)
  * In the case of a color attachment, it assumes it is already bound for read.
  */
 static void
-dumpFramebufferAttachment(JSONWriter &json, Context &context, GLenum target, GLenum attachment, GLenum format)
+dumpFramebufferAttachment(JSONWriter &json, Context &context, GLenum target, GLenum attachment, GLenum format = GL_NONE)
 {
     ImageDesc desc;
     if (!getFramebufferAttachmentDesc(context, target, attachment, desc)) {
@@ -1198,6 +1202,11 @@ dumpFramebufferAttachment(JSONWriter &json, Context &context, GLenum target, GLe
 
     assert(desc.samples == 0);
 
+    if (format == GL_NONE) {
+        assert(desc.internalFormat != GL_NONE);
+        format = getFormat(desc.internalFormat);
+    }
+
     json.beginMember(enumToString(attachment));
     dumpReadBufferImage(json, desc.width, desc.height, format, desc.internalFormat);
     json.endMember();
@@ -1230,12 +1239,7 @@ dumpFramebufferAttachments(JSONWriter &json, Context &context, GLenum target)
                 std::cerr << "warning: unexpected GL_DRAW_BUFFER" << i << " = " << draw_buffer << "\n";
                 attachment = GL_COLOR_ATTACHMENT0;
             }
-            GLint alpha_size = 0;
-            glGetFramebufferAttachmentParameteriv(target, attachment,
-                                                  GL_FRAMEBUFFER_ATTACHMENT_ALPHA_SIZE,
-                                                  &alpha_size);
-            GLenum format = alpha_size ? GL_RGBA : GL_RGB;
-            dumpFramebufferAttachment(json, context, target, attachment, format);
+            dumpFramebufferAttachment(json, context, target, attachment);
         }
     }