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Fix shaders so they don't crash when OpenGL 2.0 ES is used

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This commit is contained in:
Jon Beniston 2022-07-21 21:09:41 +01:00
parent 08cc6d02f5
commit 7ba8540dd4
3 changed files with 17 additions and 11 deletions
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12
sdrgui/gui/glshadercolormap.cpp
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@ -156,7 +156,11 @@ void GLShaderColorMap::drawSurfaceStrip(const QMatrix4x4& transformMatrix, GLflo
QOpenGLFunctions *f = QOpenGLContext::currentContext()->functions(); QOpenGLFunctions *f = QOpenGLContext::currentContext()->functions();
m_program->bind(); m_program->bind();
m_program->setUniformValue(m_matrixLoc, transformMatrix); m_program->setUniformValue(m_matrixLoc, transformMatrix);
if (m_useImmutableStorage) {
m_colorMapTexture->bind(); m_colorMapTexture->bind();
} else {
glBindTexture(GL_TEXTURE_2D, m_colorMapTextureId);
}
m_program->setUniformValue(m_colorMapLoc, 0); // Texture unit 0 for color map m_program->setUniformValue(m_colorMapLoc, 0); // Texture unit 0 for color map
m_program->setUniformValue(m_scaleLoc, scale); m_program->setUniformValue(m_scaleLoc, scale);
m_program->setUniformValue(m_alphaLoc, alpha); m_program->setUniformValue(m_alphaLoc, alpha);
@ -242,7 +246,7 @@ bool GLShaderColorMap::useImmutableStorage()
const QString GLShaderColorMap::m_vertexShaderSourceColorMap2 = QString( const QString GLShaderColorMap::m_vertexShaderSourceColorMap2 = QString(
"uniform highp mat4 uMatrix;\n" "uniform highp mat4 uMatrix;\n"
"attribute highp vec4 vertex;\n" "attribute highp vec4 vertex;\n"
"varying float y;\n" "varying highp float y;\n"
"void main() {\n" "void main() {\n"
" gl_Position = uMatrix * vertex;\n" " gl_Position = uMatrix * vertex;\n"
" y = vertex.y;\n" " y = vertex.y;\n"
@ -261,10 +265,10 @@ const QString GLShaderColorMap::m_vertexShaderSourceColorMap = QString(
); );
const QString GLShaderColorMap::m_fragmentShaderSourceColorMap2 = QString( const QString GLShaderColorMap::m_fragmentShaderSourceColorMap2 = QString(
"uniform float alpha;\n" "uniform highp float alpha;\n"
"uniform float scale;\n" "uniform highp float scale;\n"
"uniform highp sampler2D colorMap;\n" "uniform highp sampler2D colorMap;\n"
"varying float y;\n" "varying highp float y;\n"
"void main() {\n" "void main() {\n"
" gl_FragColor = vec4(texture2D(colorMap, vec2(1.0-(y/scale), 0)).rgb, alpha);\n" " gl_FragColor = vec4(texture2D(colorMap, vec2(1.0-(y/scale), 0)).rgb, alpha);\n"
"}\n" "}\n"

13
sdrgui/gui/glshaderspectrogram.cpp
View File

@ -288,6 +288,7 @@ void GLShaderSpectrogram::initTexture(const QImage& image)
initTextureMutable(image); initTextureMutable(image);
} }
initGrid(image.width()); initGrid(image.width());
m_limit = 1.4f*1.0f/(float)image.height();
} }
void GLShaderSpectrogram::initTextureImmutable(const QImage& image) void GLShaderSpectrogram::initTextureImmutable(const QImage& image)
@ -419,7 +420,7 @@ void GLShaderSpectrogram::drawSurface(SpectrumSettings::SpectrogramStyle style,
program->setUniformValue(m_dataTextureLoc, 0); // set uniform to texture unit? program->setUniformValue(m_dataTextureLoc, 0); // set uniform to texture unit?
program->setUniformValue(m_colorMapLoc, 1); program->setUniformValue(m_colorMapLoc, 1);
program->setUniformValue(m_limitLoc, 1.4f*1.0f/(float)(m_texture->height())); program->setUniformValue(m_limitLoc, m_limit);
if (style == SpectrumSettings::Outline) if (style == SpectrumSettings::Outline)
{ {
@ -721,11 +722,11 @@ void GLShaderSpectrogram::applyPerspective(QMatrix4x4 &matrix)
const QString GLShaderSpectrogram::m_vertexShader2 = QString( const QString GLShaderSpectrogram::m_vertexShader2 = QString(
"attribute vec2 coord2d;\n" "attribute vec2 coord2d;\n"
"varying vec4 coord;\n" "varying vec4 coord;\n"
"varying float lightDistance;\n" "varying highp float lightDistance;\n"
"uniform mat4 textureTransform;\n" "uniform mat4 textureTransform;\n"
"uniform mat4 vertexTransform;\n" "uniform mat4 vertexTransform;\n"
"uniform sampler2D dataTexture;\n" "uniform sampler2D dataTexture;\n"
"uniform float limit;\n" "uniform highp float limit;\n"
"uniform vec3 lightPos;\n" "uniform vec3 lightPos;\n"
"void main(void) {\n" "void main(void) {\n"
" coord = textureTransform * vec4(clamp(coord2d, limit, 1.0-limit), 0, 1);\n" " coord = textureTransform * vec4(clamp(coord2d, limit, 1.0-limit), 0, 1);\n"
@ -810,11 +811,11 @@ const QString GLShaderSpectrogram::m_fragmentShaderShaded = QString(
); );
const QString GLShaderSpectrogram::m_fragmentShaderSimple2 = QString( const QString GLShaderSpectrogram::m_fragmentShaderSimple2 = QString(
"varying vec4 coord;\n" "varying highp vec4 coord;\n"
"uniform float brightness;\n" "uniform highp float brightness;\n"
"uniform sampler2D colorMap;\n" "uniform sampler2D colorMap;\n"
"void main(void) {\n" "void main(void) {\n"
" float factor;\n" " highp float factor;\n"
" if (gl_FrontFacing)\n" " if (gl_FrontFacing)\n"
" factor = 1.0;\n" " factor = 1.0;\n"
" else\n" " else\n"

1
sdrgui/gui/glshaderspectrogram.h
View File

@ -81,6 +81,7 @@ private:
unsigned int m_textureId; unsigned int m_textureId;
QOpenGLTexture *m_colorMapTexture; QOpenGLTexture *m_colorMapTexture;
unsigned int m_colorMapTextureId; unsigned int m_colorMapTextureId;
float m_limit;
QOpenGLShaderProgram *m_programForLocs; // Which program the locations are for QOpenGLShaderProgram *m_programForLocs; // Which program the locations are for
int m_coord2dLoc; int m_coord2dLoc;