12 replies

Drawing lines on the screen on WorldRenderEvents.LAST

When I enable shaders, lines rendering works with below code (but it looks like my lines are affected by postprocessing shaders):

var buffer = Tesselator.getInstance().getBuilder();
buffer.begin(VertexFormat.Mode.DEBUG_LINES, DefaultVertexFormat.POSITION_COLOR);
buffer.vertex(x, y, z).color(r, g, b, a).endVertex();
// other vertexes
vertexBuffer.drawWithShader(modelViewMatrix, projectionMatrix, GameRenderer.getPositionColorShader());
VertexBuffer.unbind();

var buffer = Tesselator.getInstance().getBuilder();
buffer.begin(VertexFormat.Mode.DEBUG_LINES, DefaultVertexFormat.POSITION_COLOR);
buffer.vertex(x, y, z).color(r, g, b, a).endVertex();
// other vertexes
vertexBuffer.drawWithShader(modelViewMatrix, projectionMatrix, GameRenderer.getPositionColorShader());
VertexBuffer.unbind();

However when I use my own custom lines renderer with my own shaders - nothing is rendered. It is very basic code with compiling shaders, creating program, VBO/VAO, uploading buffer,

GL30.glDrawArrays(GL30.GL_LINES, 0, buffer.vertices());

GL30.glDrawArrays(GL30.GL_LINES, 0, buffer.vertices());

, etc
Any idea why my low level code doesn't draw anything?

TIP

The Iris Project•3y ago•

12 replies

Zergatul

Drawing lines on the screen on WorldRenderEvents.LAST

When I enable shaders, lines rendering works with below code (but it looks like my lines are affected by postprocessing shaders):

var buffer = Tesselator.getInstance().getBuilder();
buffer.begin(VertexFormat.Mode.DEBUG_LINES, DefaultVertexFormat.POSITION_COLOR);
buffer.vertex(x, y, z).color(r, g, b, a).endVertex();
// other vertexes
vertexBuffer.drawWithShader(modelViewMatrix, projectionMatrix, GameRenderer.getPositionColorShader());
VertexBuffer.unbind();

var buffer = Tesselator.getInstance().getBuilder();
buffer.begin(VertexFormat.Mode.DEBUG_LINES, DefaultVertexFormat.POSITION_COLOR);
buffer.vertex(x, y, z).color(r, g, b, a).endVertex();
// other vertexes
vertexBuffer.drawWithShader(modelViewMatrix, projectionMatrix, GameRenderer.getPositionColorShader());
VertexBuffer.unbind();

However when I use my own custom lines renderer with my own shaders - nothing is rendered. It is very basic code with compiling shaders, creating program, VBO/VAO, uploading buffer,

GL30.glDrawArrays(GL30.GL_LINES, 0, buffer.vertices());

GL30.glDrawArrays(GL30.GL_LINES, 0, buffer.vertices());

, etc
Any idea why my low level code doesn't draw anything?

Drawing lines on the screen on WorldRenderEvents.LAST

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