radeon: Define EXT_framebuffer_object constants to match hw.

This hides the assertion failure in glean/fbo test. Underlying
problem when same texture is set twice to different attachments
will cause assertion.

src/mesa/drivers/dri/r200/r200_context.c

@@ -360,6 +360,7 @@ GLboolean r200CreateContext( const __GLcontextModes *glVisual,
    ctx->Const.Max3DTextureLevels = 9;
    ctx->Const.MaxCubeTextureLevels = 12;
    ctx->Const.MaxTextureRectSize = 2048;
+   ctx->Const.MaxRenderbufferSize = 2048;
 
    ctx->Const.MaxTextureMaxAnisotropy = 16.0;
 
@@ -390,6 +391,7 @@ GLboolean r200CreateContext( const __GLcontextModes *glVisual,
    ctx->Const.VertexProgram.MaxNativeAddressRegs = 1;
 
    ctx->Const.MaxDrawBuffers = 1;
+   ctx->Const.MaxColorAttachments = 1;
 
    _mesa_set_mvp_with_dp4( ctx, GL_TRUE );
 

src/mesa/drivers/dri/r300/r300_context.c

@@ -345,11 +345,13 @@ static void r300InitConstValues(GLcontext *ctx, radeonScreenPtr screen)
 		ctx->Const.MaxTextureLevels = 13;
 		ctx->Const.MaxCubeTextureLevels = 13;
 		ctx->Const.MaxTextureRectSize = 4096;
+		ctx->Const.MaxRenderbufferSize = 4096;
 	}
 	else {
 		ctx->Const.MaxTextureLevels = 12;
 		ctx->Const.MaxCubeTextureLevels = 12;
 		ctx->Const.MaxTextureRectSize = 2048;
+		ctx->Const.MaxRenderbufferSize = 2048;
 	}
 
 	ctx->Const.MinPointSize = 1.0;
@@ -363,6 +365,7 @@ static void r300InitConstValues(GLcontext *ctx, radeonScreenPtr screen)
 	ctx->Const.MaxLineWidthAA = R300_LINESIZE_MAX;
 
 	ctx->Const.MaxDrawBuffers = 1;
+	ctx->Const.MaxColorAttachments = 1;
 
 	/* currently bogus data */
 	if (r300->options.hw_tcl_enabled) {

src/mesa/drivers/dri/r600/r600_context.c

@@ -270,6 +270,8 @@ static void r600InitConstValues(GLcontext *ctx, radeonScreenPtr screen)
 	ctx->Const.MaxLineWidthAA = 0xffff / 8.0;
 
 	ctx->Const.MaxDrawBuffers = 1; /* hw supports 8 */
+	ctx->Const.MaxColorAttachments = 1;
+	ctx->Const.MaxRenderbufferSize = 4096;
 
 	/* 256 for reg-based consts, inline consts also supported */
 	ctx->Const.VertexProgram.MaxInstructions = 8192; /* in theory no limit */

src/mesa/drivers/dri/radeon/radeon_context.c

@@ -317,6 +317,8 @@ r100CreateContext( const __GLcontextModes *glVisual,
    rmesa->boxes = 0;
 
    ctx->Const.MaxDrawBuffers = 1;
+   ctx->Const.MaxColorAttachments = 1;
+   ctx->Const.MaxRenderbufferSize = 2048;
 
    _mesa_set_mvp_with_dp4( ctx, GL_TRUE );