aiden/video-shader-toys
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Hide renderer internals
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This commit is contained in:
Aiden
2026-05-06 10:48:50 +10:00
parent 35f5a024fd
commit 5fd24b3f06
5 changed files with 94 additions and 64 deletions
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53
apps/LoopThroughWithOpenGLCompositing/gl/OpenGLRenderPass.cpp
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@@ -17,9 +17,9 @@ void OpenGLRenderPass::Render(
const TextBindingUpdater& updateTextBinding,
const GlobalParamsUpdater& updateGlobalParams)
{
if (hasInputSource && mRenderer.mFastTransferExtensionAvailable)
if (hasInputSource && mRenderer.FastTransferAvailable())
{
// Signal that we're about to draw using mCaptureTexture onto mFBOTexture.
// Signal that the capture texture is about to be sampled into the composite framebuffer.
VideoFrameTransfer::beginTextureInUse(VideoFrameTransfer::CPUtoGPU);
}
@@ -31,31 +31,32 @@ void OpenGLRenderPass::Render(
}
else
{
glBindFramebuffer(GL_FRAMEBUFFER, mRenderer.mDecodeFrameBuf);
glBindFramebuffer(GL_FRAMEBUFFER, mRenderer.DecodeFramebuffer());
glViewport(0, 0, inputFrameWidth, inputFrameHeight);
glClearColor(0.0f, 0.0f, 0.0f, 1.0f);
glClear(GL_COLOR_BUFFER_BIT);
}
if (layerStates.empty() || mRenderer.mLayerPrograms.empty())
std::vector<LayerProgram>& layerPrograms = mRenderer.LayerPrograms();
if (layerStates.empty() || layerPrograms.empty())
{
glBindFramebuffer(GL_READ_FRAMEBUFFER, mRenderer.mDecodeFrameBuf);
glBindFramebuffer(GL_DRAW_FRAMEBUFFER, mRenderer.mIdFrameBuf);
glBindFramebuffer(GL_READ_FRAMEBUFFER, mRenderer.DecodeFramebuffer());
glBindFramebuffer(GL_DRAW_FRAMEBUFFER, mRenderer.CompositeFramebuffer());
glBlitFramebuffer(0, 0, inputFrameWidth, inputFrameHeight, 0, 0, inputFrameWidth, inputFrameHeight, GL_COLOR_BUFFER_BIT, GL_LINEAR);
glBindFramebuffer(GL_FRAMEBUFFER, mRenderer.mIdFrameBuf);
glBindFramebuffer(GL_FRAMEBUFFER, mRenderer.CompositeFramebuffer());
}
else
{
GLuint sourceTexture = mRenderer.mDecodedTexture;
GLuint sourceFrameBuffer = mRenderer.mDecodeFrameBuf;
for (std::size_t index = 0; index < layerStates.size() && index < mRenderer.mLayerPrograms.size(); ++index)
GLuint sourceTexture = mRenderer.DecodedTexture();
GLuint sourceFrameBuffer = mRenderer.DecodeFramebuffer();
for (std::size_t index = 0; index < layerStates.size() && index < layerPrograms.size(); ++index)
{
const std::size_t remaining = layerStates.size() - index;
const bool writeToMain = (remaining % 2) == 1;
RenderShaderProgram(
sourceTexture,
writeToMain ? mRenderer.mIdFrameBuf : mRenderer.mLayerTempFrameBuf,
mRenderer.mLayerPrograms[index],
writeToMain ? mRenderer.CompositeFramebuffer() : mRenderer.LayerTempFramebuffer(),
layerPrograms[index],
layerStates[index],
inputFrameWidth,
inputFrameHeight,
@@ -63,30 +64,30 @@ void OpenGLRenderPass::Render(
updateTextBinding,
updateGlobalParams);
if (layerStates[index].temporalHistorySource == TemporalHistorySource::PreLayerInput)
mRenderer.mTemporalHistory.PushPreLayerFramebuffer(layerStates[index].layerId, sourceFrameBuffer, inputFrameWidth, inputFrameHeight);
sourceTexture = writeToMain ? mRenderer.mFBOTexture : mRenderer.mLayerTempTexture;
sourceFrameBuffer = writeToMain ? mRenderer.mIdFrameBuf : mRenderer.mLayerTempFrameBuf;
mRenderer.TemporalHistory().PushPreLayerFramebuffer(layerStates[index].layerId, sourceFrameBuffer, inputFrameWidth, inputFrameHeight);
sourceTexture = writeToMain ? mRenderer.CompositeTexture() : mRenderer.LayerTempTexture();
sourceFrameBuffer = writeToMain ? mRenderer.CompositeFramebuffer() : mRenderer.LayerTempFramebuffer();
}
}
mRenderer.mTemporalHistory.PushSourceFramebuffer(mRenderer.mDecodeFrameBuf, inputFrameWidth, inputFrameHeight);
mRenderer.TemporalHistory().PushSourceFramebuffer(mRenderer.DecodeFramebuffer(), inputFrameWidth, inputFrameHeight);
if (hasInputSource && mRenderer.mFastTransferExtensionAvailable)
if (hasInputSource && mRenderer.FastTransferAvailable())
VideoFrameTransfer::endTextureInUse(VideoFrameTransfer::CPUtoGPU);
}
void OpenGLRenderPass::RenderDecodePass(unsigned inputFrameWidth, unsigned inputFrameHeight)
{
glBindFramebuffer(GL_FRAMEBUFFER, mRenderer.mDecodeFrameBuf);
glBindFramebuffer(GL_FRAMEBUFFER, mRenderer.DecodeFramebuffer());
glViewport(0, 0, inputFrameWidth, inputFrameHeight);
glClear(GL_COLOR_BUFFER_BIT);
glActiveTexture(GL_TEXTURE0 + kPackedVideoTextureUnit);
glBindTexture(GL_TEXTURE_2D, mRenderer.mCaptureTexture);
glBindVertexArray(mRenderer.mFullscreenVAO);
glUseProgram(mRenderer.mDecodeProgram);
glBindTexture(GL_TEXTURE_2D, mRenderer.CaptureTexture());
glBindVertexArray(mRenderer.FullscreenVertexArray());
glUseProgram(mRenderer.DecodeProgram());
const GLint packedResolutionLocation = glGetUniformLocation(mRenderer.mDecodeProgram, "uPackedVideoResolution");
const GLint decodedResolutionLocation = glGetUniformLocation(mRenderer.mDecodeProgram, "uDecodedVideoResolution");
const GLint packedResolutionLocation = glGetUniformLocation(mRenderer.DecodeProgram(), "uPackedVideoResolution");
const GLint decodedResolutionLocation = glGetUniformLocation(mRenderer.DecodeProgram(), "uDecodedVideoResolution");
if (packedResolutionLocation >= 0)
glUniform2f(packedResolutionLocation, static_cast<float>(inputFrameWidth / 2), static_cast<float>(inputFrameHeight));
if (decodedResolutionLocation >= 0)
@@ -123,11 +124,11 @@ void OpenGLRenderPass::RenderShaderProgram(
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glActiveTexture(GL_TEXTURE0 + kDecodedVideoTextureUnit);
glBindTexture(GL_TEXTURE_2D, sourceTexture);
mRenderer.mTemporalHistory.BindSamplers(state, sourceTexture, historyCap);
mRenderer.TemporalHistory().BindSamplers(state, sourceTexture, historyCap);
BindLayerTextureAssets(layerProgram);
glBindVertexArray(mRenderer.mFullscreenVAO);
glBindVertexArray(mRenderer.FullscreenVertexArray());
glUseProgram(layerProgram.program);
updateGlobalParams(state, mRenderer.mTemporalHistory.SourceAvailableCount(), mRenderer.mTemporalHistory.AvailableCountForLayer(state.layerId));
updateGlobalParams(state, mRenderer.TemporalHistory().SourceAvailableCount(), mRenderer.TemporalHistory().AvailableCountForLayer(state.layerId));
glDrawArrays(GL_TRIANGLES, 0, 3);
glUseProgram(0);
glBindVertexArray(0);