Initial import

[glmemperf] / blittest.cpp

diff --git a/blittest.cpp b/blittest.cpp
new file mode 100644 (file)
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+++ b/blittest.cpp
@@ -0,0 +1,194 @@
+/**
+ * OpenGL ES 2.0 memory performance estimator
+ * Copyright (C) 2009 Nokia
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * \author Sami Kyöstilä <sami.kyostila@nokia.com>
+ *
+ * Generic blitter
+ */
+#include "blittest.h"
+#include "util.h"
+#include <sstream>
+
+const char *defaultVertSource = 
+    "precision mediump float;\n"
+    "attribute vec2 in_position;\n"
+    "attribute vec2 in_texcoord;\n"
+    "varying vec2 texcoord;\n"
+    "\n"
+    "void main()\n"
+    "{\n"
+    "  gl_Position = vec4(in_position, 0.0, 1.0);\n"
+    "  texcoord = in_texcoord;\n"
+    "}\n";
+
+const char *defaultFragSource = 
+    "precision mediump float;\n"
+    "varying vec2 texcoord;\n"
+    "uniform sampler2D texture;\n"
+    "\n"
+    "void main()\n"
+    "{\n"
+    "  gl_FragColor = texture2D(texture, texcoord);\n"
+    "}\n";
+
+BlitTest::BlitTest(int width, int height, 
+                   bool rotate, float texW, float texH,
+                   float quadW, float quadH):
+    m_width(width),
+    m_height(height),
+    m_texW(texW),
+    m_texH(texH),
+    m_quadW(quadW),
+    m_quadH(quadH),
+    m_rotate(rotate),
+    m_vertSource(defaultVertSource),
+    m_fragSource(defaultFragSource)
+{
+}
+
+BlitTest::BlitTest(GLenum format, GLenum type, int width, int height, const std::string& fileName,
+                   bool rotate, float texW, float texH,
+                   float quadW, float quadH):
+    m_format(format),
+    m_type(type),
+    m_width(width),
+    m_height(height),
+    m_texW(texW),
+    m_texH(texH),
+    m_quadW(quadW),
+    m_quadH(quadH),
+    m_rotate(rotate),
+    m_fileName(fileName),
+    m_vertSource(defaultVertSource),
+    m_fragSource(defaultFragSource)
+{
+    if (m_format >= 0x8c00)
+    {
+        m_type = m_format;
+    }
+}
+
+void BlitTest::teardown()
+{
+    glUseProgram(0);
+    glDisableVertexAttribArray(m_positionAttr);
+    glDisableVertexAttribArray(m_texcoordAttr);
+    glDeleteProgram(m_program);
+    // Disabled until driver segfault is fixed
+    //glDeleteTextures(1, &m_texture);
+}
+
+void BlitTest::prepare()
+{
+    initializeBlitter();
+    if (m_fileName.size())
+    {
+        if (m_format >= 0x8c00)
+        {
+            loadCompressedTexture(GL_TEXTURE_2D, 0, m_format, m_width, m_height, m_fileName);
+        }
+        else
+        {
+            loadRawTexture(GL_TEXTURE_2D, 0, m_format, m_width, m_height, m_format, m_type, m_fileName);
+        }
+    }
+    ASSERT_GL();
+}
+
+void BlitTest::operator()(int frame)
+{
+    float t = frame / 400.0f;
+
+    // Disable animation for now, since it interferes with the results due
+    // to lack of wrapping for NPOT textures
+    t = 0;
+
+    const GLfloat texcoords[] =
+    {
+         0 + t,       m_texH + t,
+         0 + t,       0 + t,
+         m_texW + t,  m_texH + t,
+         m_texW + t,  0 + t
+    };
+
+    const GLfloat texcoordsRotated[] =
+    {
+         m_texW + t,  0 + t,
+         0 + t,       0 + t,
+         m_texW + t,  m_texH + t,
+         0 + t,       m_texH + t
+    };
+
+    const GLfloat vertices[] =
+    {
+        -m_quadW, -m_quadH,
+        -m_quadW,  m_quadH,
+         m_quadW, -m_quadH,
+         m_quadW,  m_quadH
+    };
+
+    glVertexAttribPointer(m_positionAttr, 2, GL_FLOAT, GL_FALSE, 0, vertices);
+    glVertexAttribPointer(m_texcoordAttr, 2, GL_FLOAT, GL_FALSE, 0, m_rotate ? texcoordsRotated : texcoords);
+    glClear(GL_COLOR_BUFFER_BIT);
+    glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
+}
+
+std::string BlitTest::name() const
+{
+    std::stringstream s;
+
+    if (m_rotate)
+    {
+        s << "blit_tex_rot90_";
+    }
+    else
+    {
+        s << "blit_tex_";
+    }
+
+    s << textureFormatName(m_format, m_type);
+    s << "_" << m_width << "x" << m_height;
+
+    return s.str();
+}
+
+void BlitTest::initializeBlitter()
+{
+    m_program = createProgram(m_vertSource, m_fragSource);
+    glUseProgram(m_program);
+
+    glClearColor(.2, .4, .6, 1.0);
+
+    m_positionAttr = glGetAttribLocation(m_program, "in_position");
+    m_texcoordAttr = glGetAttribLocation(m_program, "in_texcoord");
+    assert(m_positionAttr >= 0);
+    assert(m_texcoordAttr >= 0);
+
+    glEnableVertexAttribArray(m_positionAttr);
+    glEnableVertexAttribArray(m_texcoordAttr);
+
+    m_textureUnif = glGetUniformLocation(m_program, "texture");
+    assert(m_textureUnif >= 0);
+    glUniform1i(m_textureUnif, 0);
+
+    glGenTextures(1, &m_texture);
+    glBindTexture(GL_TEXTURE_2D, m_texture);
+    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
+    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
+    ASSERT_GL();
+}