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qt: OpenGL ES 3.0 support

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This commit is contained in:
Cacodemon345
2022-03-01 13:31:19 +06:00
parent 7bbb3bc4c6
commit ee69b022fc
5 changed files with 32 additions and 4 deletions
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28
src/qt/qt_opengloptions.cpp
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@@ -45,6 +45,25 @@ void main() {\n\
color = texture(texsampler, tex);\n\
}\n";
/* Default vertex shader (OpenGL ES 3). */
static const GLchar *vertex_shader_es3 = "#version 300 es\n\
in vec2 VertexCoord;\n\
in vec2 TexCoord;\n\
out vec2 tex;\n\
void main(){\n\
gl_Position = vec4(VertexCoord, 0.0, 1.0);\n\
tex = TexCoord;\n\
}\n";
/* Default fragment shader (OpenGL ES 3). */
static const GLchar *fragment_shader_es3 = "#version 300 es\n\
in vec2 tex;\n\
uniform sampler2D texsampler;\n\
out vec4 color;\n\
void main() {\n\
color = texture(texsampler, tex);\n\
}\n";
OpenGLOptions::OpenGLOptions(QObject *parent, bool loadConfig)
: QObject(parent)
{
@@ -149,6 +168,11 @@ OpenGLOptions::addShader(const QString &path)
shader_text.remove(version);
}
if (QOpenGLContext::currentContext() && QOpenGLContext::currentContext()->isOpenGLES())
{
/* Force #version 300 es (the default of #version 100 es is too old and too limited) */
version_line = "#version 300 es";
}
auto shader = new QOpenGLShaderProgram(this);
auto throw_shader_error = [path, shader](const QString &what) {
@@ -175,8 +199,8 @@ void
OpenGLOptions::addDefaultShader()
{
auto shader = new QOpenGLShaderProgram(this);
shader->addShaderFromSourceCode(QOpenGLShader::Vertex, vertex_shader);
shader->addShaderFromSourceCode(QOpenGLShader::Fragment, fragment_shader);
shader->addShaderFromSourceCode(QOpenGLShader::Vertex, QOpenGLContext::currentContext() && QOpenGLContext::currentContext()->isOpenGLES() ? vertex_shader_es3 : vertex_shader);
shader->addShaderFromSourceCode(QOpenGLShader::Fragment, QOpenGLContext::currentContext() && QOpenGLContext::currentContext()->isOpenGLES() ? fragment_shader_es3 : fragment_shader);
shader->link();
m_shaders << OpenGLShaderPass(shader, QString());
}