added full blending pipeline
This commit is contained in:
itsmattkc
+118
-73
@@ -28,18 +28,11 @@ extern "C" {
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#include <libavformat/avformat.h>
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}
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GLuint draw_clip(QOpenGLFramebufferObject* fbo, GLuint texture, bool clear) {
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void full_blit() {
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glPushMatrix();
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glLoadIdentity();
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glOrtho(0, 1, 0, 1, -1, 1);
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fbo->bind();
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if (clear) {
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glClear(GL_COLOR_BUFFER_BIT);
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}
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glBindTexture(GL_TEXTURE_2D, texture);
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glBegin(GL_QUADS);
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glTexCoord2f(0, 0); // top left
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glVertex2f(0, 0); // top left
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@@ -50,9 +43,41 @@ GLuint draw_clip(QOpenGLFramebufferObject* fbo, GLuint texture, bool clear) {
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glTexCoord2f(0, 1); // bottom left
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glVertex2f(0, 1); // bottom left
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glEnd();
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glBindTexture(GL_TEXTURE_2D, 0);
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glPopMatrix();
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}
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void draw_clip(QOpenGLContext* ctx, GLuint fbo, GLuint texture, bool clear) {
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ctx->functions()->glBindFramebuffer(GL_DRAW_FRAMEBUFFER, fbo);
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if (clear) {
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glClear(GL_COLOR_BUFFER_BIT);
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}
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glBindTexture(GL_TEXTURE_2D, texture);
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full_blit();
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glBindTexture(GL_TEXTURE_2D, 0);
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ctx->functions()->glBindFramebuffer(GL_DRAW_FRAMEBUFFER, 0);
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}
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GLuint draw_clip(QOpenGLFramebufferObject* fbo, GLuint texture, bool clear) {
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fbo->bind();
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if (clear) {
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glClear(GL_COLOR_BUFFER_BIT);
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}
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glBindTexture(GL_TEXTURE_2D, texture);
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full_blit();
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glBindTexture(GL_TEXTURE_2D, 0);
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fbo->release();
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return fbo->texture();
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}
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@@ -78,8 +103,6 @@ void process_effect(Clip* c,
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}
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if (e->enable_superimpose) {
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GLuint superimpose_texture = e->process_superimpose(timecode);
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qDebug() << "superimpose texture was:" << superimpose_texture;
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qDebug() << "composite texture was:" << composite_texture;
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if (superimpose_texture == 0) {
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qWarning() << "Superimpose texture was nullptr, retrying...";
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@@ -88,7 +111,6 @@ void process_effect(Clip* c,
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// if there is no previous texture, just return the superimposes texture
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// UNLESS this is a shader-extended superimpose effect in which case,
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// we'll need to draw it below
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qDebug() << "returning superimpose directly";
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composite_texture = superimpose_texture;
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} else {
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// if the source texture is not already a framebuffer texture,
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@@ -361,7 +383,6 @@ GLuint compose_sequence(ComposeSequenceParams ¶ms) {
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if (e->container->selected) selected_effect = e;
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}
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}
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qDebug() << "texture ID:" << textureID;
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// using gizmo data, set definitive gizmo
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if (selected_effect != nullptr) {
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@@ -388,87 +409,111 @@ GLuint compose_sequence(ComposeSequenceParams ¶ms) {
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// == EFFECT CODE END ==
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// == START FINAL DRAW ON SEQUENCE BUFFER ==
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if (textureID > 0) {
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// bind framebuffer
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params.ctx->functions()->glBindFramebuffer(GL_DRAW_FRAMEBUFFER, final_fbo);
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// set viewport to sequence size
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glViewport(0, 0, s->width, s->height);
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params.ctx->functions()->glViewport(0, 0, s->width, s->height);
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// bind final texture
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// == START RENDER CLIP IN CONTEXT OF SEQUENCE ==
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// render a backbuffer
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params.ctx->functions()->glBindFramebuffer(GL_DRAW_FRAMEBUFFER, params.backend_buffer1);
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glClearColor(0.0, 0.0, 0.0, 0.0);
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glClear(GL_COLOR_BUFFER_BIT);
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// bind final clip texture
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glBindTexture(GL_TEXTURE_2D, textureID);
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// set texture filter to bilinear
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glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
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glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
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params.ctx->functions()->glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
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params.ctx->functions()->glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
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// draw clip on screen according to gl coordinates
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glBegin(GL_QUADS);
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glTexCoord2f(coords.textureTopLeftX, coords.textureTopLeftY); // top left
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glVertex2f(coords.vertexTopLeftX, coords.vertexTopLeftY); // top left
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glTexCoord2f(coords.textureTopRightX, coords.textureTopRightY); // top right
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glVertex2f(coords.vertexTopRightX, coords.vertexTopRightY); // top right
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glTexCoord2f(coords.textureBottomRightX, coords.textureBottomRightY); // bottom right
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glVertex2f(coords.vertexBottomRightX, coords.vertexBottomRightY); // bottom right
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glTexCoord2f(coords.textureBottomLeftX, coords.textureBottomLeftY); // bottom left
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glVertex2f(coords.vertexBottomLeftX, coords.vertexBottomLeftY); // bottom left
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glEnd();
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// release final clip texture
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glBindTexture(GL_TEXTURE_2D, 0);
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params.ctx->functions()->glBindFramebuffer(GL_DRAW_FRAMEBUFFER, 0);
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// == END RENDER CLIP IN CONTEXT OF SEQUENCE ==
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//
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//
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// PROCESS POST-SHADERS
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//
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//
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// copy front buffer to back buffer
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draw_clip(params.ctx, params.backend_buffer2, params.main_attachment, true);
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// == START FINAL DRAW ON SEQUENCE BUFFER ==
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// bind front buffer as draw buffer
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params.ctx->functions()->glBindFramebuffer(GL_DRAW_FRAMEBUFFER, final_fbo);
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// load background texture into texture unit 0
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params.ctx->functions()->glActiveTexture(GL_TEXTURE0 + 0); // Texture unit 0
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params.ctx->functions()->glBindTexture(GL_TEXTURE_2D, params.backend_attachment2);
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// load foreground texture into texture unit 1
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params.ctx->functions()->glActiveTexture(GL_TEXTURE0 + 1); // Texture unit 1
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params.ctx->functions()->glBindTexture(GL_TEXTURE_2D, params.backend_attachment1);
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// bind and configure blending mode shader
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params.blend_mode_program->bind();
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params.blend_mode_program->setUniformValue("blend_mode", coords.blendmode);
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params.blend_mode_program->setUniformValue("blendmode", coords.blendmode);
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params.blend_mode_program->setUniformValue("opacity", coords.opacity);
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params.blend_mode_program->setUniformValue("background", 0);
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params.blend_mode_program->setUniformValue("foreground", 1);
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// draw clip on screen
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glBegin(GL_QUADS);
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glClear(GL_COLOR_BUFFER_BIT);
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if (coords.grid_size <= 1) {
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glTexCoord2f(coords.textureTopLeftX, coords.textureTopLeftY); // top left
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glVertex2f(coords.vertexTopLeftX, coords.vertexTopLeftY); // top left
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glTexCoord2f(coords.textureTopRightX, coords.textureTopRightY); // top right
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glVertex2f(coords.vertexTopRightX, coords.vertexTopRightY); // top right
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glTexCoord2f(coords.textureBottomRightX, coords.textureBottomRightY); // bottom right
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glVertex2f(coords.vertexBottomRightX, coords.vertexBottomRightY); // bottom right
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glTexCoord2f(coords.textureBottomLeftX, coords.textureBottomLeftY); // bottom left
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glVertex2f(coords.vertexBottomLeftX, coords.vertexBottomLeftY); // bottom left
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} else {
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float rows = coords.grid_size;
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float cols = coords.grid_size;
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for (int k=0;k<rows;k++) {
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float row_prog = float(k)/rows;
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float next_row_prog = float(k+1)/rows;
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for (int j=0;j<cols;j++) {
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float col_prog = float(j)/cols;
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float next_col_prog = float(j+1)/cols;
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float vertexTLX = float_lerp(coords.vertexTopLeftX, coords.vertexBottomLeftX, row_prog);
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float vertexTRX = float_lerp(coords.vertexTopRightX, coords.vertexBottomRightX, row_prog);
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float vertexBLX = float_lerp(coords.vertexTopLeftX, coords.vertexBottomLeftX, next_row_prog);
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float vertexBRX = float_lerp(coords.vertexTopRightX, coords.vertexBottomRightX, next_row_prog);
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float vertexTLY = float_lerp(coords.vertexTopLeftY, coords.vertexTopRightY, col_prog);
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float vertexTRY = float_lerp(coords.vertexTopLeftY, coords.vertexTopRightY, next_col_prog);
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float vertexBLY = float_lerp(coords.vertexBottomLeftY, coords.vertexBottomRightY, col_prog);
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float vertexBRY = float_lerp(coords.vertexBottomLeftY, coords.vertexBottomRightY, next_col_prog);
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glTexCoord2f(float_lerp(coords.textureTopLeftX, coords.textureTopRightX, col_prog), float_lerp(coords.textureTopLeftY, coords.textureBottomLeftY, row_prog)); // top left
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glVertex2f(float_lerp(vertexTLX, vertexTRX, col_prog), float_lerp(vertexTLY, vertexBLY, row_prog)); // top left
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glTexCoord2f(float_lerp(coords.textureTopLeftX, coords.textureTopRightX, next_col_prog), float_lerp(coords.textureTopRightY, coords.textureBottomRightY, row_prog)); // top right
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glVertex2f(float_lerp(vertexTLX, vertexTRX, next_col_prog), float_lerp(vertexTRY, vertexBRY, row_prog)); // top right
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glTexCoord2f(float_lerp(coords.textureBottomLeftX, coords.textureBottomRightX, next_col_prog), float_lerp(coords.textureTopRightY, coords.textureBottomRightY, next_row_prog)); // bottom right
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glVertex2f(float_lerp(vertexBLX, vertexBRX, next_col_prog), float_lerp(vertexTRY, vertexBRY, next_row_prog)); // bottom right
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glTexCoord2f(float_lerp(coords.textureBottomLeftX, coords.textureBottomRightX, col_prog), float_lerp(coords.textureTopLeftY, coords.textureBottomLeftY, next_row_prog)); // bottom left
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glVertex2f(float_lerp(vertexBLX, vertexBRX, col_prog), float_lerp(vertexTLY, vertexBLY, next_row_prog)); // bottom left
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}
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}
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}
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glEnd();
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full_blit();
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// release blend mode shader
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params.blend_mode_program->release();
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// unbind texture
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glBindTexture(GL_TEXTURE_2D, 0);
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// unbind texture from texture unit 1
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params.ctx->functions()->glBindTexture(GL_TEXTURE_2D, 0);
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// unbind texture from texture unit 0
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params.ctx->functions()->glActiveTexture(GL_TEXTURE0 + 0); // Texture unit 0
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params.ctx->functions()->glBindTexture(GL_TEXTURE_2D, 0);
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// unbind framebuffer
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params.ctx->functions()->glBindFramebuffer(GL_TEXTURE_2D, 0);
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params.ctx->functions()->glBindFramebuffer(GL_DRAW_FRAMEBUFFER, 0);
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// == END FINAL DRAW ON SEQUENCE BUFFER ==
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}
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// == END FINAL DRAW ON SEQUENCE BUFFER ==
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// prepare gizmos
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if ((*params.gizmos) != nullptr
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&& params.nests.isEmpty()
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