Renderdoc MCP

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by Linkingooo

MCP server for RenderDoc — AI-assisted GPU frame capture analysis

Install

$pip install -e .

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Tools (40)

analyze_bandwidth

Write/read bandwidth estimate per render target

analyze_overdraw

Overdraw estimate per render target group

analyze_render_passes

Auto-detect render pass boundaries by Clear/RT switches, summarize each pass

analyze_state_changes

Finds redundant state-change patterns and batching opportunities

close_capture

Close current capture and free resources

debug_shader_at_pixel

Per-pixel shader debug — returns variable trace or pixel value + shader info as fallback

diagnose_negative_values

Scans all float RTs for negative/NaN/Inf — finds first event introducing them, detects TAA accumulation

diagnose_precision_issues

Checks R11G11B10 sign-bit loss, shallow depth buffers, SRGB/linear mismatches

diff_draw_calls

Compare two draw calls — shows state differences with human-readable implications

disassemble_shader

Shader disassembly with auto fallback chain; supports search (keyword + context) and linerange

export_draw_textures

Batch export all textures bound to a draw call (auto-names, skips placeholders)

export_mesh

Export mesh as OBJ with positions, normals, UVs from post-VS data

find_draws

Search draw calls by rendering state: blend, min vertices, texture/shader/RT binding

get_action

Full detail for a single action

get_buffer_data

Read buffer bytes (hex dump or float32 array)

get_capture_info

Capture metadata: API, action count, resolution, knowngpuquirks (Adreno/Mali/PowerVR/Apple)

get_cbuffer_contents

Actual constant buffer variable values; supports filter for variable name substring

get_draw_call_state

One-call draw analysis: action info, blend formula, depth, stencil, rasterizer, textures with sizes, RTs, shaders

get_frame_overview

Frame-level statistics: action counts by type, texture/buffer memory, render targets, resolution

get_pass_timing

Most expensive render passes — uses GPU counters if available, falls back to triangle-count heuristic

get_pipeline_state

Full state: topology, viewports, rasterizer, blend, depth, stencil (human-readable enums)

get_post_vs_data

Post-transform vertex data (VS out / GS out)

get_resource_usage

Which events read/write a resource

get_shader_bindings

Constant buffers, SRVs, UAVs, samplers for a shader stage

get_shader_reflection

Input/output signatures, resource binding layout

get_texture_stats

Per-channel min/max/avg with anomaly detection (NaN/Inf/negative); supports allslices for cubemaps

get_vertex_inputs

Vertex attributes, vertex/index buffer bindings

list_actions

List the draw call / action tree — supports filter (name substring) and eventtype (draw/clear/copy…)

list_buffers

All buffers (filterable by min size)

list_resources

All named resources (filterable by type, name pattern)

list_textures

All textures (filterable by format, min width)

open_capture

Open a .rdc file (auto-closes previous)

pick_pixel

RGBA value at a coordinate

pixel_history

Full per-pixel modification history across all events

read_texture_pixels

Read a rectangular region of pixels (up to 64×64) with per-pixel anomaly flags

sample_pixel_region

Uniform-grid scan of an RT region — detects NaN/Inf/negative/overexposed hotspots

save_render_target

Save RT snapshot at an event (color + optional depth)

save_texture

Export to PNG, JPG, BMP, TGA, HDR, EXR, or DDS

search_actions

Search by name pattern and/or action flags

set_event

Navigate to an event (required before pipeline queries)