-/**
- * 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();
-}