[Piglit] [PATCH 05/10] nv_conditional_render: port blitframebuffer-test to gles3

[Erik Faye-Lund]

This test can relatively easily be ported to gles3, so let's do that for
better test-coverage.

Signed-off-by: Erik Faye-Lund <erik.faye-lund at collabora.com>
---
 .../CMakeLists.gles3.txt                      |  1 +
 .../nv_conditional_render/blitframebuffer.c   | 61 +++++++++++++++++++
 2 files changed, 62 insertions(+)

diff --git a/tests/spec/nv_conditional_render/CMakeLists.gles3.txt b/tests/spec/nv_conditional_render/CMakeLists.gles3.txt
index 5cd5970ff..47884c340 100644
--- a/tests/spec/nv_conditional_render/CMakeLists.gles3.txt
+++ b/tests/spec/nv_conditional_render/CMakeLists.gles3.txt
@@ -2,5 +2,6 @@ link_libraries(piglitutil_${piglit_target_api})
 
 piglit_add_executable (nv_conditional_render-begin-while-active_gles3 begin-while-active.c)
 piglit_add_executable (nv_conditional_render-begin-zero_gles3 begin-zero.c)
+piglit_add_executable (nv_conditional_render-blitframebuffer_gles3 blitframebuffer.c)
 
 # vim: ft=cmake:
diff --git a/tests/spec/nv_conditional_render/blitframebuffer.c b/tests/spec/nv_conditional_render/blitframebuffer.c
index 3dd0d2efe..bae350790 100644
--- a/tests/spec/nv_conditional_render/blitframebuffer.c
+++ b/tests/spec/nv_conditional_render/blitframebuffer.c
@@ -36,12 +36,47 @@
 
 PIGLIT_GL_TEST_CONFIG_BEGIN
 
+#ifdef PIGLIT_USE_OPENGL
 	config.supports_gl_compat_version = 10;
+#else // PIGLIT_USE_OPENGL_ES3
+	config.supports_gl_es_version = 30;
+#endif
+
 	config.window_visual = PIGLIT_GL_VISUAL_DOUBLE | PIGLIT_GL_VISUAL_RGBA;
 	config.khr_no_error_support = PIGLIT_NO_ERRORS;
 
 PIGLIT_GL_TEST_CONFIG_END
 
+#ifndef PIGLIT_USE_OPENGL
+
+static const char *vs_source =
+	"attribute vec4 piglit_vertex;\n"
+	"attribute vec4 piglit_texcoord;\n"
+	"varying vec2 uv;\n"
+	"void main()\n"
+	"{\n"
+	"  gl_Position = piglit_vertex;\n"
+	"  uv = piglit_texcoord.xy;\n"
+	"}\n";
+
+static const char *fs_source_green =
+	"void main()\n"
+	"{\n"
+	"  gl_FragColor = vec4(0.0, 1.0, 0.0, 0.0);\n"
+	"}\n";
+
+static const char *fs_source_tex =
+	"uniform sampler2D tex;\n"
+	"varying mediump vec2 uv;\n"
+	"void main()\n"
+	"{\n"
+	"  gl_FragColor = texture2D(tex, uv);\n"
+	"}\n";
+
+static GLint prog_green, prog_tex;
+
+#endif
+
 static void fill_tex(int level, int w, int h, const GLubyte *color)
 {
 	GLubyte *data;
@@ -64,14 +99,22 @@ static void blit_window_to_tex(GLuint tex, int w, int h)
 	GLuint fb;
 
 	glGenFramebuffersEXT(1, &fb);
+#ifdef PIGLIT_USE_OPENGL
 	glBindFramebufferEXT(GL_DRAW_FRAMEBUFFER_EXT, fb);
+#else
+	glBindFramebuffer(GL_DRAW_FRAMEBUFFER, fb);
+#endif
 	glFramebufferTexture2DEXT(GL_DRAW_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT0_EXT, GL_TEXTURE_2D, tex, 0);
 
 	assert(glCheckFramebufferStatusEXT(GL_DRAW_FRAMEBUFFER_EXT) == GL_FRAMEBUFFER_COMPLETE_EXT);
 
 	glBlitFramebufferEXT(0, h, w, 2 * h, 0, 0, w, h, GL_COLOR_BUFFER_BIT, GL_LINEAR);
 
+#ifdef PIGLIT_USE_OPENGL
 	glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, piglit_winsys_fbo);
+#else
+	glBindFramebuffer(GL_DRAW_FRAMEBUFFER, piglit_winsys_fbo);
+#endif
 	glDeleteFramebuffersEXT(1, &fb);
 }
 
@@ -87,9 +130,15 @@ piglit_display(void)
 	glClear(GL_COLOR_BUFFER_BIT);
 
 	/* Draw bottom half of window to green. */
+#ifdef PIGLIT_USE_OPENGL
 	glColor4fv(green);
+#else
+	glUseProgram(prog_green);
+#endif
 	piglit_draw_rect(-1, -1, 2, 1);
+#ifdef PIGLIT_USE_OPENGL
 	glColor4f(1, 1, 1, 1);
+#endif
 
 	/* Set up a green texture. */
 	glGenTextures(1, &texture);
@@ -115,10 +164,16 @@ piglit_display(void)
 	glEndConditionalRenderNV();
 
 	/* Draw the texture to top half of the window. */
+#ifdef PIGLIT_USE_OPENGL
 	glEnable(GL_TEXTURE_2D);
+#else
+	glUseProgram(prog_tex);
+#endif
 	piglit_draw_rect_tex(-1, 0, 2, 1,
 			     0, 0, 1, 1);
+#ifdef PIGLIT_USE_OPENGL
 	glDisable(GL_TEXTURE_2D);
+#endif
 
 	pass = piglit_probe_rect_rgba(0, piglit_width / 2,
 				      piglit_width, piglit_height / 2,
@@ -135,6 +190,12 @@ void
 piglit_init(int argc, char **argv)
 {
 	piglit_require_extension("GL_NV_conditional_render");
+
+#ifdef PIGLIT_USE_OPENGL
 	piglit_require_extension("GL_EXT_framebuffer_object");
 	piglit_require_extension("GL_EXT_framebuffer_blit");
+#else
+	prog_green = piglit_build_simple_program(vs_source, fs_source_green);
+	prog_tex = piglit_build_simple_program(vs_source, fs_source_tex);
+#endif
 }
-- 
2.19.1