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Create shader programs through map context in order to cache programs through re-initialization

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This commit is contained in:
Dan Paulat 2022-10-02 23:16:35 -05:00
parent 32e8ca72a0
commit a45e996872
10 changed files with 324 additions and 144 deletions
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32
scwx-qt/source/scwx/qt/gl/text_shader.cpp
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@ -1,4 +1,5 @@
#include <scwx/qt/gl/text_shader.hpp>
#include <scwx/qt/gl/shader_program.hpp>
#include <scwx/util/logger.hpp>
#pragma warning(push, 0)
@ -18,41 +19,46 @@ static const auto logger_ = scwx::util::Logger::Create(logPrefix_);
class TextShaderImpl
{
public:
explicit TextShaderImpl(OpenGLFunctions& gl) :
gl_ {gl}, projectionLocation_(GL_INVALID_INDEX)
explicit TextShaderImpl(std::shared_ptr<map::MapContext> context) :
context_ {context},
shaderProgram_ {nullptr},
projectionLocation_(GL_INVALID_INDEX)
{
}
~TextShaderImpl() {}
OpenGLFunctions& gl_;
std::shared_ptr<map::MapContext> context_;
std::shared_ptr<ShaderProgram> shaderProgram_;
GLint projectionLocation_;
};
TextShader::TextShader(OpenGLFunctions& gl) :
ShaderProgram(gl), p(std::make_unique<TextShaderImpl>(gl))
TextShader::TextShader(std::shared_ptr<map::MapContext> context) :
p(std::make_unique<TextShaderImpl>(context))
{
}
TextShader::~TextShader() = default;
TextShader::TextShader(TextShader&&) noexcept = default;
TextShader::TextShader(TextShader&&) noexcept = default;
TextShader& TextShader::operator=(TextShader&&) noexcept = default;
bool TextShader::Initialize()
{
OpenGLFunctions& gl = p->gl_;
OpenGLFunctions& gl = p->context_->gl();
// Load and configure shader
bool success = Load(":/gl/text.vert", ":/gl/text.frag");
p->shaderProgram_ =
p->context_->GetShaderProgram(":/gl/text.vert", ":/gl/text.frag");
p->projectionLocation_ = gl.glGetUniformLocation(id(), "projection");
p->projectionLocation_ =
gl.glGetUniformLocation(p->shaderProgram_->id(), "projection");
if (p->projectionLocation_ == -1)
{
logger_->warn("Could not find projection");
}
return success;
return true;
}
void TextShader::RenderText(const std::string& text,
@ -65,9 +71,9 @@ void TextShader::RenderText(const std::string& text,
GLuint textureId,
TextAlign align)
{
OpenGLFunctions& gl = p->gl_;
OpenGLFunctions& gl = p->context_->gl();
Use();
p->shaderProgram_->Use();
gl.glEnable(GL_BLEND);
gl.glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
@ -103,7 +109,7 @@ void TextShader::RenderText(const std::string& text,
void TextShader::SetProjection(const glm::mat4& projection)
{
p->gl_.glUniformMatrix4fv(
p->context_->gl().glUniformMatrix4fv(
p->projectionLocation_, 1, GL_FALSE, glm::value_ptr(projection));
}