GL_CHROMIUM_color_buffer_float_rgba extension support

GL_CHROMIUM_color_buffer_float_rgba (OpenGL ES 2.0) is a subset of GL_EXT_color_buffer_float (OpenGL ES 3.0), which SwiftShader already supports. Fixes 1 webgl conformance tests: conformance/extensions/oes-texture-float.html Change-Id: Ic1451187db219af74ba41fa7634bd5bcb6fb0b44 Reviewed-on: https://swiftshader-review.googlesource.com/16470Tested-by: Alexis Hétu <sugoi@google.com> Reviewed-by: Nicolas Capens <nicolascapens@google.com>

GL_CHROMIUM_color_buffer_float_rgba extension support
2f113e3e · Alexis Hetu · Alexis Hétu · f9b80fe1 · 2f113e3e · 2f113e3e
Commit 2f113e3e authored Jan 18, 2018 by Alexis Hetu Committed by Alexis Hétu Mar 14, 2018
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Context.cpp src/OpenGL/libGLESv2/Context.cpp +1 -0

libGLESv2.cpp src/OpenGL/libGLESv2/libGLESv2.cpp +2 -1

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--- a/src/OpenGL/libGLESv2/Context.cpp
+++ b/src/OpenGL/libGLESv2/Context.cpp
@@ -4400,6 +4400,7 @@ const GLubyte *Context::getExtensions(GLuint index, GLuint *numExt) const
 		"GL_ANGLE_texture_compression_dxt3",
 		"GL_ANGLE_texture_compression_dxt5",
 		"GL_APPLE_texture_format_BGRA8888",
+		"GL_CHROMIUM_color_buffer_float_rgba", // A subset of EXT_color_buffer_float on top of OpenGL ES 2.0
 		"GL_CHROMIUM_texture_filtering_hint",
 		"GL_NV_fence",
 		"GL_NV_framebuffer_blit",

--- a/src/OpenGL/libGLESv2/libGLESv2.cpp
+++ b/src/OpenGL/libGLESv2/libGLESv2.cpp
@@ -4964,7 +4964,8 @@ void TexImage2D(GLenum target, GLint level, GLint internalformat, GLsizei width,
 		GLint clientVersion = context->getClientVersion();
 		if(clientVersion < 3)
 		{
-			if(internalformat != (GLint)format)
+			if((internalformat != (GLint)format) &&
+			   !((type == GL_FLOAT) && (format == GL_RGBA) && (internalformat == GL_RGBA32F))) // CHROMIUM_color_buffer_float_rgba
 			{
 				return error(GL_INVALID_OPERATION);
 			}